- detachable tire
- dent
- descaling
- detonation sensor
- diesel
- diesel locomotive
- differential ratio
- depth gauge
- design
- detection system
- detergent oil
- detoxed vehicle
- diagnostic link
- dial gauge
- diaphragm spring
- diesel engine
- differential shaft
- dinging
- diagnostic system
- dipped beam
- dipped headlight
- dipstick
- direction indicator
- differential lock
- disc rotor
- disc valve
- disc wheel
- discharge pressure
- discharge side
- discharge valve
- displacement volume
- distributor
- distributor cam
- directional indicators
- discharge pipe
- discharge rate
- disconnect
- disengage
- distance piece
- distilled water
- distributor baseplate
- distributor shaft
- distributor body
- distributor finger
- distributor rotor
- divider
- dogleg section
- dome lamp
- door alignment
- door beam
- door capping
- door handle
- domestic
- door
- door bottom
- door catch
- door gap
- door lock
- door seal
- door skin
- door step
- double-declutch
- downdraft carburetor
- downshift
- downward change
- drag brake
- draining tray
- drier
- drift
- drivable
- driver
- driver error
- driving conditions
- driving force
- driving position
- drophead
- double-clutching
- down pipe
- down-shifting
- downdraught carburettor
- drag
- drag coefficient
- drag link
- drain plug
- drivability
- drive
- drive module
- drive plate
- drive train
- driving crew
- driving habits
- drum brake
- dry galvanizing
- drying frame
- drying oven
- dual carriageway
- dual-acting
- dubonnet suspension
- ductile
- ductility