Variable displacement

Variable displacement is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved fuel economy.

Engine displacement

Engine displacement is the swept volume of all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead centre (TDC) to bottom dead centre (BDC).

Continuously variable transmission CVT

A continuously variable transmission (CVT) (also known as a single-speed transmission, stepless transmission, pulley transmission, or, in case of motorcycles, a twist-and-go) is an automatic transmission that can change seamlessly through a continuous range of effective gear ratios.

Locking differential

A locking differential, differential lock, diff lock or locker is a variation on the standard automotive differential.

Limited-slip differential

A limited-slip differential is a type of automotive differential gear arrangement that allows for some difference in angular velocity of the output shafts, but imposes a mechanical limit on the disparity.

Constant velocity joint CV

Constant-velocity joints (AKA homokinetic or CV joints) allow a drive shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play.


An airbag is a type of vehicle safety device and is an occupant restraint system.

Curb weight

Curb weight (US English) or kerb weight (UK English) is the total weight of a vehicle with standard equipment

Compression ratio

The static compression ratio of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamberfrom its largest capacity to its smallest capacity.

Catalytic converter

A catalytic converter is an emissions control device that converts toxic gases and pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (an oxidation and a reduction reaction).



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