- flat twin
- flat tyre
- flat washer
- flexural shock
- flitch plate
- floating caliper
- flood
- floor mat
- flow control
- flywheel housing
- fog lamp
- flat spot
- flat tire
- floating calliper
- floating engine
- flooded engine
- floor pan
- foettinger coupling
- font bumper
- font differential
- foot brakes
- ford
- forge
- fork leg
- fork truck
- flushing oil
- flying bar
- flywheel turner
- fog lamps
- fleet
- fleet car
- flexible
- float
- floor shift
- flywheel
- flywheel magneto
- foot brake
- foot change
- footprint
- forked
- forked crosshead
- formula 1
- fottinger coupling
- foul-cycle
- foundry car
- four-stroke
- fourth-valve
- frame member
- frame number
- frame structure
- frameless
- frameless construction
- frameless window
- freight train
- friction clutch
- friction welding
- front mask
- front piston
- front silencer
- fuel economy
- fuel gage
- fuel indicator
- freeway
- front engine
- front seat
- fuel starvation
- fuel supply
- fuel tank
- friction bearing
- front pipe
- fuel accumulator
- fuel cap
- fuel distributor
- fuel gauge
- fuel lid
- fuel mileage
- fuel pressure
- fuel sedimenter
- fuel vapour
- full bore
- full load
- garaged
- frequency range
- frictional
- front axle
- front panel
- front suspension
- fuel charge
- fuel consumption
- fuel filter
- fuel line
- full lock
- functional
- fusible link
- galvanizing bath
- garbage truck
- gapper
- gas
- gas filter
- gas guzzler