- specialized truck
- specific speed
- specification
- speed limiter
- specific activity
- specifications sheet
- speed category
- speed rating
- spiked tire
- spin galvanizing
- spider
- spigot bearing
- spindle arm
- spiral casing
- splash shield
- splashed graphics
- splayed spring
- split bearing
- split collar
- splitting chisel
- spoke
- sporty car
- spotting in
- spray pattern
- spraying viscosity
- spring
- spring clip
- spring shackle
- sprung gear
- spur gears
- squab
- splash panel
- split housing
- spoilers
- spontaneous combustion
- sports car
- sports seat
- spot welding
- stabilize
- stabilizer link
- stall
- stall test
- standard equipment
- standard wheel
- standing wave
- spoiler
- spoke wheel
- sponge lead
- spongy lead
- spot lamp
- spray mist
- spreader
- spring beating
- spring compressor
- spring eye
- spring retainer
- spring seat
- sprung weight
- starter brush
- starter button
- starter commutator
- starter interlock
- starter jet
- starter lookout
- starter solenoid
- starter switch
- starting carburetor
- starting jet
- static balancing
- station wagon
- squat
- stabilizer belt
- stand
- steel wheel
- steer angle
- steered wheel
- steering circle
- steering column
- steering gear
- steering gearbox
- steering head
- steering lock
- steering swivel
- steering wheel
- stellite valve
- step plate
- step transmission
- steam car
- steam injection
- steel strip
- steering
- steering arm
- steering axis
- steering box
- steering damper
- steering gears
- steering geometry
- steering knuckle
- steering linkage
- steering play