Car Parts Trivia

Pop the hood of any car and you'll find a small city of parts working together, each with a specific job to do. Understanding what's under there doesn't require a mechanic's certification, just a little curiosity about how all those components turn fuel into motion.

This quiz covers the essential parts that keep a car running, from the engine bay to the brakes.

The Engine's Supporting Cast

The engine gets the credit, but it can't do its job alone. Spark plugs ignite the fuel, the crankshaft turns piston motion into rotation, and the timing belt or chain keeps everything moving in sync. Without the alternator quietly recharging the battery while you drive, none of the car's electronics would stay powered for long.

• Spark plugs ignite the air-fuel mixture inside each cylinder.
• The alternator recharges the battery and powers electrical systems while the engine runs.
• The catalytic converter reduces harmful emissions before exhaust exits the tailpipe.

Getting You There Smoothly

Beyond the engine, systems like the driveshaft, suspension, and brakes handle the job of actually moving and stopping the car. Shock absorbers dampen the bumps in the road, while brake pads clamp down on rotors to bring thousands of pounds of metal safely to a stop.