Multiplexing: Modern technology used to transmit electrical signals to several devices, e.g., wipers, lights, horns, etc. through one serial bus instead of many common wires.

Multi Purpose Vehicle (MPV): Vehicles resembling family cars but taller with a shorter hood/bonnet. Designed for maximum practicality. Also called mini van or people's carrier. Their body resembles a van, but has rear side doors, rear side windows and interior fittings to accommodate passengers quite similar to station wagon.

Monocoque or Unitized or Unitary construction: Integral body-chassis construction employed in modern cars, wherein metal pressings are formed into an integral unit. In this the engine and suspension are attached to a single shell in various places to spread the load evenly over the whole shell. Also called, unitized or unitary construction.

Mini van: North American term for a boxy wagon-type of car, often having three or four rows of seats, with a capacity to carry six or inure passengers.

Micro car or Station car: Extremely small automobile, typically less than 3 meters in length; usually seat only the driver and one passenger and may have even three wheels only. Also called station car.

Master cylinder: Main cylinder in the hydraulic braking system where the brake fluid is pressurized and sent to various wheel cylinders or calipers for applying brakes.

Mac Pherson strut: The strut containing shock absorber, the spring and the stub axle. The suspension employing this is the most widely used type of independent suspension.

Multipurpose vehicle (MPV): A large car which can easily be used for carrying people or goods as required.

Live axle: Axle transmitting engine power to the wheels.

Limousine: A car in which driving compartment is separated from the rear passenger compartment by a sliding glass division.

Laser Speed Gun: A laser-based device, used to measure the speed of a running vehicle.

Laminated windshield: A windshield made with two sheets of glass with a thin layer of viscous transparent plastic in between. Plastic sandwich prevents the glass from shattering on impact, can contain a tint to reduce heat inside the vehicle and protect eyes from glare.

King pin inclination: Inclination of the king pin from the vertical, is called the king pin inclination. In modem cars where the king pin has been replaced by the ball joints, this term has been renamed as 'Steering Axis Inclination'.

King pin: The pin about which front wheel of a vehicle with non-independent suspension is pivoted.