- metallic paint
- metallize
- metering valve
- microgalvanic cell
- metal support
- metallized lamp
- metric horsepower
- milk tanker
- mine truck
- minus terminal
- misfire
- mini-grinder
- mishap
- mixture ratio
- mobile home
- metering unit
- methanol cell
- midship engine
- mill
- millsaw file
- minibus
- mining car
- minor change
- minor diameter
- model code
- modulator pressure
- modulator valve
- monocoque body
- monkey wrench
- moon roof
- mortar lorry
- motor locomotive
- motorbus
- muffler shell
- morse
- motor coach
- motor oil
- motor tractor
- motor vehicle
- motorcar factory
- motorcar parts
- motorization rate
- moulding material
- mounting frame
- mudguard
- muffler jacket
- multi-disc
- multigrade oil
- multiphase controller
- MOT test
- motor transport
- motorcar
- motorcar plant
- motorized
- move off
- multiplex technology
- mushroom valve
- mutual inductance
- mushroom tappet
- natural gas
- needle jet
- negative electrode
- negative terminal
- net horsepower
- needle
- needle bearing
- negative bank
- negative camber
- negative plate
- nemberplate lamp
- neutral
- neutral steer
- nominal capacity
- nominal diameter
- nipple
- nonslip differential
- nominal pressure
- nozzle restrictor
- nudge bar
- nordberg key
- nose-up
- nozzle holder
- nylon hammer
- O2 sensor
- octagon nut
- off-road
- offside
- oil cooler
- oil feed
- oil gallery
- octane rating
- offset
- offset radius
- oil filler
- oil galleries
- oil jet
- oil line
- oil pump
- oil sludge
- oil trap