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A

ABS
Anti-lock braking system. A computer-controlled system that prevents brakes from locking up and tyres from skidding during hard braking.
Adaptive cruise control
A laser or radar-sensing cruise control system that causes a vehicle to automatically slow or stop in order to avoid front-end collisions.
Adaptive headlights
Headlights that turn as the driver turns the steering wheel, for the purpose of improving illumination in the direction of the turn.
Adjustable suspension
A suspension that offers driver-selectable damper (and sometimes spring) firmness settings to suit varying conditions and personal preferences.
Air conditioner refrigerant
The liquid used in air conditioning systems, which has the property of boiling at ambient air temperatures.
Air conditioning
The cooling and dehumidification of a vehicles cabin air.
Air conditioning filter
A device that removes contaminants from external air entering the ventilation system.
Air filter
A device that filters incoming air fed to the engine.
Airbag deactivation
A system that uses sensors in a vehicles front passenger seat to determine whether to activate that seats front airbag, based on whether it detects the presence of an individual of sufficient weight.
Airbags
A cushion that deploys and fills with air when a major impact occurs to reduce a vehicle occupants chances of coming in contact with the vehicles interior surfaces.
Anti-theft
A device or system of devices that aid in preventing a vehicle from being stolen.
Anti-theft alarm
A device that uses an auditory signal and/or telemetric to alert a vehicles owner of an attempted theft.
Anti-theft immobilizer
An electronic device that works together with a key (that includes a small transmitter) and that prevents the engine from starting when the key is not present.
Antifreeze
See "Coolant."
APR
Annual Percentage Rate. The cost of credit (i.e., the interest rate) expressed as a yearly rate.
Assignment fee
See "Acquisition fee."
Audio format
The format of digital compression readable by a vehicles audio system, such as WMA, MP3, WAV, SACD or AAC.
Audio remote control
A wireless device that uses infrared or radio waves to control a vehicles sound system.
Auto dimming rearview mirror
See "Electrochromatic rearview mirror."
Automatic door unlock
A device that automatically unlocks a vehicles doors after a collision.
Automatic transmission
A transmission that uses a torque converter, planetary gearset and clutches or bands to automatically change a vehicles gears.
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B

Bluetooth
In Car Phone System enabling you to use your mobile phone using your cars speakers and digital info display
Body
The outer panels that shroud the mechanical and electrical workings of a vehicle.
Bolstering
Upholstered foam supports integrated into a seat that help keep the driver or passenger in an optimal position.
Brake fluid
The fluid used in the hydraulic brake system.
Brake pads
High-friction material attached to a metal backing plate.
Brake pedal
A device used to control a vehicles brakes.
Braking assist
A system that monitors the swiftness of a driver's brake pedal application and applies additional braking force if it determines a that panic stop is occurring.
Breakover angle
The maximum angle at which a vehicle can traverse a sharp ridge without making contact or hanging up between axles.
Bumpers
A supplemental device designed to protect a vehicles frame and/or body from collision damage.
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C

Carbon footprint
A measure of a vehicles total consumption of natural resources weighed against the Earths ability to regenerate those resources.
Carburettor
A device used on older internal combustion gasoline engines that is mounted on the engines intake manifold and supplies fuel to the engine.
Cargo door type
The type of cargo door: liftgate, vertical split-hinge or horizontal split-hinge.
Centre console trim
Wood, composite, leather or metal adornments intended to supplement the aesthetic elements of a vehicles center console.
Child seat anchors
Built-in attachment points that accept child safety seats built to ISOFIX international standards, commonly referred to in the USA as the LATCH (Lower Anchors and Tethers for Children) system.
Childproof safety feature(s)
The option(s) to disable a vehicles windows, door locks and/or passenger air bag in order to prevent injury to children.
Climate control
The computer-controlled regulation of heating and air conditioning systems to accommodate a user-specified temperature setting.
Clutch pedal
A pedal located on the floor of the vehicle to the left of the brake pedal that, when depressed, disengages the clutch from the flywheel.
Collapsible steering column
A steering column that collapses in the event of a hard frontal impact to reduce the risk of injury to the driver.
Combined fuel economy
The average number of miles a vehicle is able to travel using one gallon of fuel according to EPA simulated laboratory tests that consist of 55% motorway and 45% city driving conditions.
Comprehensive insurance
Vehicle insurance that covers damage other than that caused by a collision with another vehicle or object.
Convertible
Roof that can be opened. including soft tops, hard tops, T-tops, Targa-style tops, and tops that are manual or power operated.
Coolant
Also known as "antifreeze." A mixture of water and ethylene glycol that has both a higher boiling point and a lower freezing point than plain water.
Cooled seats
Seats that can direct air from the air conditioning system through tiny holes in the center section of the seat bottom.
Crash test ratings
Ratings that represent a vehicles performance in crash tests.
Cruise control
A device that, when engaged by the driver, automatically controls a vehicles speed.
Crumple zone
A section of a vehicles structure that collapses during impact to absorb energy.
Curb / Kerb weight
The total weight of a vehicle, including a full tank of fuel, all fluids and standard equipment, but without any cargo or passengers.
Curtain airbags
Also known as "head airbags." Wide-spanning airbags that when deployed cover the side glass in a side impact or, in some applications, a rollover, to keep occupants' heads and limbs fully inside the vehicle.
CVT
A transmission with a continuously variable drive ratio (as opposed to conventionally stepped gear ratios) that maintains a steady acceleration curve with no pauses for gear changes.
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D

Demo
(i) a test drive; (ii) a vehicle that has been used as a demonstration model by a Retail Centre.
Depreciation
The amount by which a vehicle (or any physical item) reduces in value over time.
Diesel engine
A vehicle with an engine that uses diesel fuel and compression ignition.
Direct injection system
A fuel injection system in which the injection nozzles are located inside the combustion chamber of each piston.
Direct shift gearbox
Also referred to as "DSG," "SMG," "sequential manual gearbox" and "automated manual transmission." See Automatic
Disc changer
An in-dash or remote-mounted CD or DVD/CD player that can store and read multiple discs and play them through the vehicles audio system.
Distributor cap
The non-conductive cap of the distributor that contains the contacts leading to each individual spark plug.
Drive shaft
A sturdy metal tube with universal joints on either end that connects the engine to a differential on a rear-wheel or four-wheel drive vehicle.
Drive system
The type of drive system: two-wheel drive, four-wheel drive or all-wheel drive
Driving lights
Auxiliary high-beam driving lamps.
DSG
Direct shift gearbox. Also referred to as "SMG," "sequential manual gearbox" and "automated manual transmission." See "Automatic Transmission."
Dual-mode hybrid
A hybrid vehicle with two different drive systems, referred to as Modes. In the first mode the vehicles runs solely on an electric motor powered by the vehicles battery system. When the electric-only mode is low on power, or during harder acceleration and faster speeds, a petrol engine mode will initiate. The second Mode uses a petrol engine to help power the vehicle and recharge the electrical system batteries.
Dusk-sensing headlights
A feature that, when activated, automatically turns on the headlights and taillights when the ambient light dims at sunset.
Dynamic brake control
See "Emergency brake assist."
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E

Electric battery type
The type of battery used to power the electric motor in a hybrid or electric vehicle:  lead-acid, flooded, gel, lithium ion, absorbed glass mat, Zebra Na/NiCL2 or NiZn traction.
Electric motor performance
An electric vehicles or hybrid vehicles electric motors ability to do work, expressed in terms of horsepower, torque or kilowatts.
Electric vehicle
A vehicle that is run entirely on electricity, using batteries, capacitors and one or more traction drive systems.
Electrochromatic rearview mirror
A rearview mirror that automatically dims at night when it detects a bright glare.
Electronic brake force distribution
A feature of some antilock braking systems that proportions and applies brake force to each wheel independently.
Electronic stability control
See "Stability control."
Emergency brake assist
An electronically controlled system that maximizes brake efficiency during panic stops.
Engine Auto Stop/Start
A system that automatically shuts the engine off when a vehicle comes to rest for a period, and then restarts it automatically when the brake is released and the throttle is depressed.
Engine oil
A substance that lubricates and cools the moving parts of the engine and reduces corrosion and the formation of rust.
Engine oil level warning system
A device that automatically brings a low engine oil level to the attention of a driver.
Engine performance
An engines ability to do work in terms of horsepower, torque or efficiency.
Engine size
A vehicle engine’s displacement, in litres (according to its manufacturer).
Engine thermostat
A device that senses the temperature of the engine coolant for the purpose of regulating the engine cooling system.
Entry lighting
A system of lights that aids a driver or passenger in entering a vehicle in the dark.
Environmental impact
An assessment of the biophysical effects a vehicle has on the environment, commencing with its production and ending with its disposal.
EPA fuel economy/MPG estimates
The city and motorway fuel economy ratings issued by the EPA.
Equity
For a vehicle that has been financed through a loan, the difference at any time between what a vehicle is worth at that time and the amount that is then owed on the loan.
ESC
See "Stability control."
Estimated annual fuel costs
An estimation of cost of fuelling a vehicle over the course of a year.
EV
Electric vehicle.
EV effective range per charge
The average distance an electric vehicle is able to travel on a full charge.
Excess wear and tear
Wear or damage to a vehicle that is in excess of what is normally expected in the ordinary course of operating a leased vehicle.
Extended warranty
A vehicle warranty available from your Retail Centre that extends your vehicles basic warranty beyond its original period.
Exterior camera
A video camera mounted outside a vehicle that relays its signal to a monitor within the cabin.
Exterior mirrors adjustment type
The type of position adjustment control for the exterior mirrors: power, memory or manual.
External temperature display
The digital display of the ambient air temperature around a vehicle
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F

Factory-installed
Vehicle equipment that is installed by the manufacturer (in contrast to equipment that may be installed by the dealer or the owner).
Finance
To borrow money (either as a loan or in the form of a lease) to obtain some or all of the funds to acquire a vehicle.
Finance rate
See "APR."
Fog lights
A pair of driving lights that provides a wide, low beam to undercut fog.
4WD
A drivetrain that employs two differentials and a transfer case to provide power to all four wheels of a vehicle.
Front seat type
The type of front seating: bucket seats, sport seats, split-bench seats or captains chairs.
Fuel capacity
The amount of fuel that a vehicles fuel tank can hold.
Fuel cell vehicle
A vehicle that utilizes fuel cells to create electricity through a chemical process using oxygen from the air and hydrogen.
Fuel consumption
The rate at which an engine uses up its fuel supply.
Fuel economy
A measure of the amount of fuel used by a vehicle over a certain distance, or the distance travelled per volume of fuel used.
Fuel filler cap
A cap used to seal a vehicles fuel filler neck.
Fuel injection system
A device that atomizes fuel by forcibly pumping it through a small nozzle under high pressure and delivers it to the vehicles engine.
Fuel type
The type of fuel used to power a vehicle: gasoline, ethanol, E85, diesel, bio-diesel, natural gas or electricity.
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G

Gap insurance
Insurance that covers any "gap" between (i) the amount your insurance company will pay you if your vehicle is stolen or destroyed (written off), and (ii) the amount you still owe.
Gas/electric hybrid engine
A powertrain that combines an electric motor and a petrol or diesel internal combustion engine.
Gasoline engine (U S)
An internal combustion engine that burns conventional gasoline. See petrol engine
Gauges
See "instrumentation."
Ground clearance
The distance between the lowest point of a vehicle and level ground.
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H

Head airbags
See "Curtain airbags."
Head room
The distance from the hip of a vehicles occupant to the vehicles interior rooftop.
Headlight washers
A set of washer nozzles and/or wipers that clean a vehicles headlights.
Headlights
A pair of bright lamps that provide visibility during darkness.
Headsets
A pair of small speakers that, when placed close to a passengers ears, enables the passenger to listen to a vehicles sound system without disturbing other passengers.
Heads-up display
A digital display projected from a vehicles dashboard onto its windscreen to provide information within the drivers direct line of sight.
Heated mirrors
Sideview mirrors with internal electronic heating coils designed to prevent fog and ice from obstructing visibility.
Heated windscreen
A windscreen with tiny embedded heating elements that act to resist fogging.
Heater
A heat exchanger placed in the ventilation system that diffuses heat from the engines cooling system into an airstream generated by an inline fan.
Horse Power
A unit of measurement for engine power that was originally developed as a way to express the output of steam locomotives in terms of the strength of draft horses.
HVAC
Heating, ventilation and air conditioning.
Hybrid degree
The level of hybrid technology used for a vehicle: full, mild, power-assist or plug-in..
Hybrid engine
A powertrain that combines an electric motor and an alternative means of propulsion and/or power generation (for example, hydrogen). A petrol/electric hybrid engine is the most common example of a hybrid engine.
Hybrid performance
A hybrid engine and electric motors combined ability to do work in terms of horsepower, torque or efficiency.
Hybrid power source
The source of power in a hybrid vehicle: petrol/electric, plug-in, fuel cell or pneumatic.
Hybrid vehicle
A vehicle that combines the use of internal combustion and electricity as power sources.
Hydrogen fuel cell
An energy conversion device that produces electricity by means of electrochemical reactions between hydrogen and an oxidant.
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I

In-car mobile phone see bluetooth
A mobile phone that either (i) has a handset built into the vehicle, or (ii) is a portable unit with an accompanying dock built into the vehicle that enables operation through the vehicles entertainment and stereo system.
Individual monitors
More than one video monitor in the rear passenger area of a vehicle with a rear seat entertainment system.
Instrumentation
Digital and/or analog displays used to convey to the driver information such as dynamic engine parameters, operating conditions, RPM, speed and water temperature.
Intelligent car
A vehicle that employs the latest in telemetrics, driver awareness and/or pedestrian safety technology.
Interior lighting
Halogen lamps or light-emitting diodes (LEDs) used to illuminate a vehicles interior space.
Interior trim
Wood, composite, leather or metal adornments intended to supplement the aesthetic elements of a vehicles interior.
Intermittent wipers
A wiper setting that causes the wipers to pause for a driver-selected period between wipes.
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K

Keyless ignition
System allowing the activation by the driver (key-holder) of a push-button to start a car
Knee airbags
Small airbags that deploy under the dashboard by the knees, typically on the driver's side where the steering column and other hard vehicle parts are located.L
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L

Leg room
The distance from the floor of a vehicle (a persons ankle point) to the centreline of the seat (a persons hip joint).
Length
The distance from the most forward-facing point of a vehicle to the most rearward point.
Li-ion
Li-ion (Lithium-ion) battery is a type of rechargeable battery that offers better performance versus conventional rechargeable batteries such as NiCad (Nickel-Cadmium) and NiMH (nickel-metal hydride). Lithium-ion offers more power and less weight, which offers an extended driving range.
Liftgate
The window integrated into the hinged lid of a hatchback, SUV or crossover that swings upward to provide access to the cargo area.
Lip spoiler
A spoiler that is flush-mounted to a vehicles boot lid or lift-gate that allows air to flow over it but not under it.
LNG
LNG (Liquefied natural gas) is natural gas (CH4) that has been refined and liquefied. The Process of liquefying natural gas requires the removal of contaminants like helium, water, and heavy hydrocarbons then condensed into a liquid state close to atmospheric pressure 3.6 psi (25 kPa) by cooling it to approximately ?260 °F (?163 °C).
Load height
The minimum height to which an item must be lifted in order to be loaded into a vehicles cargo area.
Locks
A device or system of devices that prevents a vehicle from being entered without a key or an electronic keyless entry remote control.
Low fuel warning indicator
An alert, usually in the form of a halogen lamp or LED, warning the driver of a low fuel supply.
LPG
Liquefied petroleum gas. Also referred to as "GPL," "LP Gas" or "autogas." A blend primarily of two hydrocarbon gases, propane and butane.
Luggage capacity
A measurement of a vehicles boot/cargo volume.
Lumbar support
A mechanical or pneumatic device that matches a vehicles seat back to the contours of the driver or passenger.
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M

Make
For a vehicle, either the name of its Manufacturer or Brand
Manual transmission
A transmission that uses a clutch and a shift (gear) selector to change gears.
Manufacturers engine code
An alphanumeric code given to an engine by its manufacturer in order to distinguish it from other engines.
Map storage
The media on which the maps for a vehicles navigation system are stored (generally CD, DVD or hard drive).
Max HP RPM
The speed of an engine at which it generates its maximum horsepower.
Max Torque RPM
The speed of an engine at which it generates its maximum torque.
Maximum cargo capacity
A measurement of a vehicles cargo volume when the rear seats (including a third row if applicable) are folded or removed.
Memory settings
Preset positions and settings (for power seats, mirrors or steering column positions) or for the audio system, exterior mirrors or navigation system, that can be recalled.
Mid-engine
A vehicle that is propelled solely by its rear wheels and whose engine that is behind the passenger compartment but forward of the rear axle.
Model
A specific vehicle brand identified by a name or number (and which is usually further classified by trim or style level).
Model year
For a vehicle model, the calendar year designation assigned by the manufacturer to the annual version of that model.
Monthly payment
The amount of that must be paid each month under the terms of a finance contract.
MPG
Miles per gallon.
MRRP
Manufacturers recommended retail price.
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N

Navigation interface
The means by which a vehicles navigation system is controlled, including touch screen, push button and/or voice activation.
Navigation system
A device that communicates with global positioning satellites to determine a vehicles physical location and plot a course using stored map information.
Number of speeds
The number of different drive ratios a vehicles transmission is capable of selecting.
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O

OEM
Original equipment manufacturer, i.e., the manufacturer of a vehicle.
Off-road
Vehicles usable off roads, e.g. on dirt tracks, usually with high-ground-clearance outfitted for the rigours of travelling on non-paved roads or harsh terrain.
Oil filter
A cartridge-filled canister placed in an engines lubricating system to strain dirt and abrasive materials out of the oil.
On-board diagnosis system
A computer-controlled system that identifies malfunctioning or out-of-adjustment components under its control through the display of trouble codes. The presence of trouble codes is usually indicated by an intermittently or constantly lit "check engine " or "service engine soon" light.
AC Outlet
An electrical socket receiving AC current produced by a vehicles charging system.
Optional equipment
Equipment that is not included in the manufacturers base configuration of a vehicle.
Oversteer
A handling characteristic of a vehicle that causes it to turn more sharply than the driver intends because the rear wheels are sliding to the outside of the turn.
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P

Parallel hybrid
Vehicle powered by an electric motor and an internal combustion engine that are inline. This type of hybrid can be driven on, full electric mode, petrol engine mode, or combined.
Parking assist
An electronic system that employs laser, radar or sonar technology to assist parking.
Parking lights
Sometimes referred to as "daytime running lights." White lights intended to increase a vehicles visibility to other drivers.
Parking senors
Button-size sensors in the front and/or rear bumpers that measure the distance to nearby cars and other objects and alert the driver using sounds or lights.
Passenger memory settings
Preset power seat positions for the passenger that can be recalled.
Passenger volume
The total volume of space available for passengers.
Pillar
A shaft or other structure that supports the roof of a vehicle, with the A-pillars being the structures that frame the windscreen, and each successive set of structures (moving toward the rear of the vehicle) being named after successive letters of the alphabet.
Plug-in vehicle
A vehicle powered solely by electricity available from an AC power socket.
Power steering
An electric and/or hydraulic system that multiplies, for ease and comfort, the force a driver exerts on the steering wheel.
Powertrain warranty
Also referred to as the "drivetrain warranty." A vehicle warranty that covers most of the parts that make the vehicle move, including the engine, transmission, drive axles and driveshaft..
Pre-crash system
A system of devices that employs radar or laser technology to sense an impending collision and reacts by implementing precautionary measures, including tightening seatbelts and applying braking.
Premium audio
A sound system that has been provided to the vehicle manufacturer by a name brand audio manufacturer.
Privacy glass
A vehicle window with a factory-installed tint, utilizing either a mylar covering or smoked glass, that has enough opacity to obscure the vehicles interior from view.
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R

Radio data system RDS
A small portion of the FM frequency that is allocated for broadcasting alphanumeric news, traffic and other information.
Rain-sensing wipers
A feature that uses rainfall sensors to engage the wipers and adjust wiper speed accordingly.
Real time traffic updates
Traffic congestion information gathered by road sensors and other means read by a vehicles navigation system through communications satellites.
Rear defroster
A device that melts ice or frost or removes condensation from a vehicles rear window.
Rear door type
The type of rear door: hinged or sliding.
Rear seat entertainment system
The elements of a vehicles entertainment system accessible to rear seat passengers.
Rear seat type
The type of rear seating: bench seats, bucket seats, removable seats, split-bench seats, captains chairs or seats that convert into a bed.
Rear spoiler
An aerodynamic device attached to a vehicles boot lid or tail-gate consisting of one or more airfoils supported by uprights that allows air to flow over it as well as under it, resulting in decreased lift and increased stability at high speeds.
Recommended fuel type
The optimal type of fuel (based on its octane rating) recommended by a vehicles manufacturer.
Remote start
A feature of a vehicles electronic key fob that controls the vehicles ignition.
Remote boot release
The control of a vehicles power-activated release using a button on an electronic key fob or smart key.
Required fuel type
The minimum acceptable type of fuel (based on its octane rating) recommended by a vehicle’s manufacturer.
Residual value
An assessment of a vehicles worth at the end of a finance agreement.
Retractable mirrors
Sideview mirrors that can be moved closer to a vehicle when parking in a tight space or using an automatic car wash.
Roadside assistance
A service available from various manufacturers that assists a driver when a vehicle is inoperable.
Roll-over protection
A system of devices that works to prevent or lessen the damage from rollover accidents.
Roof rack
A device attached to a vehicle that is used to anchor cargo/luggage  to the vehicles roof.
Roof spoiler
A spoiler that is mounted from the rearward-facing edge of a vehicles roof to the tail-gate just above the rear windscreen, or to the upper edge of the rear windscreen itself
RPM
Revolutions per minute.
Run flat
A tyre that is capable of being driven on temporarily after losing its pneumatic pressure.
Running boards
Rocker panel extensions that function as steps to aid the driver and passengers in the entering and exiting of tall vehicles.
Rust & corrosion warranty
A warranty that covers the repair or replacement of the vehicles sheet metal in the event of damage from rust or corrosion that is severe enough to cause a hole.
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S

Satellite communication
A system used to send and receive vehicle data, crash information, concierge services and navigation to and from a vehicle through communications satellites.
Scheduled maintenance warranty
A warranty that covers service procedures recommended by the manufacturer at predetermined intervals to preserve and/or prolong the life of a vehicle.
Seat adjustment type
The type of adjustment control for the seats: manual, power or power-with-memory.
Seat belts
Safety harnesses designed to secure vehicle occupants during a collision.
Seatback storage
A storage pocket that is on the back of a seat.
Seatbelt force limiters
Part of seatbelt pretensioner that helps prevent the seatbelt from being over-tightened.
Seatbelt pretensioners
A seatbelt with a mechanism that reels in the belt when the airbag is deployed for the purpose of keeping the occupant in the proper position.
Seating capacity
The number of people that can be safely seated  in a vehicle, including the driver.
Self-levelling headlights
A system that uses suspension height sensors to determine the orientation of a vehicle's body for the purpose of making up-down adjustments to the direction of the headlights, for the protection of oncoming drivers.
Sequential manual gearbox
Also referred to as "SMG," "direct shift gearbox," "DSG" and "automated manual transmission." See "Automated Manual Transmission."
Service reminder light
A light that indicates that vehicle maintenance is needed or that a service is required.
Side airbags
Small airbags that deploy from the outside edge of a seat to protect the occupant's ribcage in a side impact collision.
Side impact beam
A structural support designed to protect a vehicles occupants from side impacts.
Side pockets
A storage pocket that is attached to the door panel.
Spare
A fifth wheel and tyre that is stored on or in a vehicle e g in case of puncture.
Speaker configuration
The number and arrangement of speakers as well as the number of independent speaker channels (including centre and subwoofer channels) for a vehicles sound system.
Speed-sensitive volume control
A feature in some vehicle sound systems that lowers the speaker volume in proportion to vehicle speed.
Speed-sensitive wipers
A feature that increases the speed of the wipers with vehicle speed.
Spoiler
An attachment to a vehicle (or component of its body) originally introduced for the purpose of directing airflow over such device (or the entire vehicle) to decrease lift and increase stability at high speeds.
Stability control
Also known as "electronic stability control," or "ESC." A safety feature that improves the safety of a vehicles handling by detecting skids and compensating by adjusting braking pressure to help maintain the intended direction of the vehicle.
Start-stop system
A system typically found in hybrid vehicles that automatically stops and restarts the internal combustion engine to reduce the amount of time the engine spends idling and improve fuel economy.
Steering column lock
A mechanism that prevents steering wheel movement unless the ignition switch is moved from the locked position.
Steering wheel adjustment
Mechanism that enables adjustment of the position of the steering column for the driver.
Steering wheel controls
Electronic controls for a vehicles entertainment, cruise control,phone, telemetry and/or climate control systems mounted on the steering wheel for the driver’s convenience.
Storage media
The physical media that a vehicle sound system is capable of playing and/or recording to, such as CD, DVD, hard drive, USB or flash drive.
Sunroof
An opening in the roof of a vehicle covered by metal or glass.
Supercharger
A device powered by a belt, gear, shaft or chain connected to the engines crankshaft that forces air into an internal-combustion engine in order to increase engine power.
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T

Tachometer
An instrument that tells the driver how fast the engine is rotating, commonly including a redline to indicate the maximum engine speed.
TCS
See "Traction control."
Telemetrics
The integrated use of telecommunications and electronic data communications in a vehicle.
Timing belt
A "toothed" belt that drives an overhead camshaft ( in some vehicles a water pump).
Tint
A transparent plastic film applied to a vehicles windows that reduces visible light transmission and, in some cases, rejects heat by reducing UV and infrared transmissions.
Title
The legal status reflecting the registered legal owner.
Torque
A measurement of an engine's power that indicates how forcefully it can rotate the crankshaft at a given engine speed.
Towing capacity
The maximum amount of weight a vehicle is capable of towing (according to its manufacturer).
Traction control
Also known as "traction control system," or "TCS." A safety feature that regulates wheel spin and prevents loss of control under acceleration by ensuring maximum traction and contact between the tyres and the road (by adjusting brake pressure to one or more wheels, closing the throttle, or reducing the fuel supply to at least one or more cylinders).
Traction control system
See "Traction control."
Trade-in
A vehicle that is currently owned by the purchaser of a new or used vehicle from a Retail Centre and that is part-exchanged for the newly purchased vehicle.
Transmission type
The type of transmission (gearbox): automatic, manual, or automated manual.
Trip computer
An electronic device used to calculate and display trip information, such as distance travelled, average speed and fuel economy.
Turbocharger
Sometimes referred to as a "turbosupercharger." A device that uses an exhaust-driven turbine to force air into an internal-combustion engine in order to increase engine power.
Turning circle
Also referred to as "turning diameter." The diameter of the circle made by a vehicle in a full-lock 360 degree turn.
Two-stage unlocking
A remote electronic door lock system that opens the drivers door on the first press and the other doors on the second press.
Tyre pressure monitoring system
An electronic system that measures and displays to the driver the amount of pressure in a vehicles tyres.
Tyre speed rating
An alphanumeric value assigned to a tyre by its manufacturer that indicates the maximum speed the tyre can safely sustain for a pre-determined time.
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U

Under seat storage
A storage console located under a vehicles seat.
Understeer
A handling characteristic of a vehicle that causes it to turn less sharply than the driver intends because the front wheels are sliding to the outside of the turn.
Upholstery
Cloth, leather or synthetic material used to cover a vehicles seats, door panels, arm rests and headrests.
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V

Valves per cylinder
The total number of intake and exhaust valves employed in each individual cylinder of an engine.
Vanity mirrors
Mirrors commonly placed on the underside of a vehicles sun visors intended to be used for personal grooming.
Variable valve timing
An engine feature that allows the lift, timing or duration of the engines valvetrain to be changed dynamically while it is in operation.
Vehicle Identification Number
A Vehicle Identification Number, or "VIN," is the unique code that is assigned to an individual vehicle by its manufacturer and that distinguishes it from all other vehicles. No two vehicles can have the same VIN. Typically, the VIN is stamped into a plate or printed on a sticker and affixed to the vehicle in several different places, including inside the engine bay and on the driver's side door jamb.
Certain digits in the VIN identify a vehicle's attributes, including its final point of assembly, its model year, the manufacturer and, usually, the model of the vehicle.
Vehicle type
The type of vehicle class, e g hatchback, supermini, saloon.
Ventilated seats
Seats that direct ambient cabin air through tiny holes in the centre section of the seat.
Video monitor
A colour or monochromatic liquid crystal display used for information, navigation or video located in a vehicles dashboard, headliner or headrests.
Video source
A device that produces a video signal to be displayed by a vehicles entertainment system.
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Water pump
A device that circulates coolant through a vehicles cooling system.
Wheel alignment
The adjustment of various components to meet predetermined specifications for camber, caster, toe and ride height.
Wheel covers
A decorative metal or plastic disc that obscures a vehicles stamped steel wheels, wheel nuts and/or hubs from view.
Wheel cylinders, rear
In drum-type brakes, small-bore hydraulic cylinders that are fitted between the brake shoes and are actuated when the brakes are applied.
Wheel diameter
The diameter, in inches, of a vehicles wheel.
Wheel locks
Special wheel nuts intended to prevent wheel theft that can only be installed or removed with a specific wrench or key.
Wheel nuts/bolts
The nuts that hold a wheel onto its hub.
Wheelbase
The distance between the centre of a vehicles front axle and the centre of its rear axle.
Width
The width of a vehicle at its widest point.
Wireless data link
A method of transferring digital data wirelessly through Bluetooth or WiFi technology.
Wiring harness
The groups of wires and connectors that carry electric current through the vehicle.
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