What Could Be the Reason If a Car Can Start but Won't Move?

[AshlynRose]

If a car can start but won't move, it might be due to issues with the brake system or the handbrake and gear engagement. Here are the specific details: 1. Brake caliper problem: It could be that the piston ring of the brake caliper is stuck. If this is the cause, the brake caliper needs to be replaced. It could also be that the metal plate fixing the brake pads in the brake caliper is deformed. If this is the case, the metal plate of the brake pads needs to be replaced. 2. Rust adhesion between brake pads and brake discs: If the car owner lives in a relatively humid area, especially after rain or during high-humidity overcast days, the brake pads and brake discs can rust and stick together after the car has been parked for a while. This situation frequently occurs in winter after washing the car. The brake discs being frozen is a normal phenomenon.

[DiBethany]

A car that starts but won't move is a common sight in repair shops, often due to drivetrain issues. If the clutch disc is worn or the release bearing is stuck, power can't reach the wheels, leaving the car just revving without moving. Low transmission fluid or valve body failure in automatics can also cause hesitation, sometimes making the gearshift feel stiff when changing gears. Check fluid levels and condition—replace if dirty to avoid wasting money. Older cars are especially prone to clutch wear; sudden loss of power on highways is dangerous, so find a reliable repair shop immediately—don't delay.

[OCaleb]

From a technical perspective, successful ignition proves the starting system is functioning normally, but the car not moving usually involves gear or control failures. For example, a faulty gear position sensor may cause the computer to misjudge that the gear hasn't been shifted; or the electronic parking brake may not be released due to a broken signal wire. When the engine ECU receives incorrect data, it will limit power output for safety reasons - don't force driving in such cases. During regular car washes, be careful not to let water enter electrical connectors to avoid circuit shorts. For automatic transmission vehicles, also check oil pressure and the TCM module. When data abnormalities occur, plugging in an OBD scanner can instantly reveal the cause, saving both time and effort.

[DiAllison]

I've personally experienced this - the car starts with one turn of the key but just won't move, absolutely frustrating! Later I realized the parking brake getting stuck or gear not fully engaged are common mistakes. Check the dashboard warning lights - a yellow light means caution. Minor issues can be fixed yourself by releasing the parking brake or shifting gears again. If that doesn't work, seek help immediately. Breaking down on the highway can be deadly - spending a hundred bucks on inspection is way better than an accident.