- independent suspension
- inerspring seat
- inertia drive
- induce
- induction
- induction manifold
- induction period
- inertia pinion
- inflation pressure
- inertial resistance
- injection
- injection period
- injection pump
- inlet
- inlet end
- inlet manifold
- inner liner
- insulated lorry
- inspection pit
- insulated container
- insulating tape
- insulators
- insulator nose
- intake manifold
- intake port
- integral injection
- interior
- interior volume
- inner tube
- input shaft
- input shell
- inspection lamp
- installed height
- instrument cluster
- insulating cap
- intake value
- inter-cooler
- interior trim
- interlock
- intermittent wipers
- internal damage
- internal micrometer
- internal resistance
- interval operation
- isoelectric vehicle
- isolator
- jack up
- jacking pad
- jet adjuster
- jounce
- judder
- jump-out
- jack stand
- jacking point
- jalopy
- jamb switch
- jerrican
- job
- joggle
- kadenacy effect
- kickdown switch
- jet
- jet needle
- jumper cables
- junk
- key file
- keyless entry
- kickup
- kingpin offset
- kink
- kit
- knock control
- knock sensor
- kick strip
- kickback
- kit car
- knock resistance
- knuckle arm
- knurl
- knurled nut
- knurling
- lambda probe
- laminated glass
- laminating
- lamp panel
- land
- lane
- lap joint
- lateral stability
- lead filter
- leading
- lateral
- lateral impact
- lateral mounting
- lead loading
- lead petrol
- leaf spring
- lean mixture
- leftward welding
- layer thickness