Car Symptom Checker
Cars don’t break by “component category” — they shake, stall, grind, or lose power. Pick what yours is doing and see the real vehicles and failure patterns owners report it on, ranked by complaint volume and linked to the full pattern: failure mileage, diagnostic codes, and the repair costs owners cite.
Loss of power while driving4823
The engine suddenly stops making power — often tied to fuel delivery, turbo, sensor, or transmission faults.
Engine stalling or shutting off6400
The engine cuts out while driving or at idle — a top safety complaint, with many possible root causes.
Won't start / no crank1812
The vehicle cranks but won’t fire, or won’t crank at all — battery, starter, fuel, or immobilizer.
Check engine light4361
The most common warning indicator — pull the trouble code to see what it points to.
Loss of power steering3222
Steering suddenly goes heavy or unresponsive — electric or hydraulic power-steering failure.
Brake problems / brake failure3232
Soft pedal, long stops, or total brake loss — one of the most serious failure types.
Transmission slipping or shifting hard1437
Slipping out of gear, harsh or delayed shifts, or shudder — common on troubled automatics, CVTs, and DCTs.
Shaking or vibration3926
Vibration at idle, under acceleration, or while braking — driveline, engine, or suspension related.
Hesitation or poor acceleration4143
The car stumbles, surges, or won’t respond when you press the accelerator.
Limp mode / reduced power1532
The vehicle drops into a protective low-power state, usually after detecting a powertrain fault.
Overheating1890
Coolant temperature climbs into the danger zone — leaks, water pump, thermostat, or head-gasket trouble.
Burning smell or smoke2521
A burning odor or visible smoke — oil, coolant, electrical, or brake-related; treat as urgent.
Grinding noise1950
A metal-on-metal grind — frequently brakes, wheel bearings, or transmission.
Knocking or ticking noise1719
A deep knock or top-end tick from the engine — can signal serious internal wear.
Clunking noise1186
A clunk over bumps or when shifting — suspension, driveline, or mount related.
Whining or humming noise827
A rising whine or hum with speed — bearings, pump, or transmission.
Squealing or screeching1040
A high-pitched squeal — belts, brakes, or worn components.
Misfire or rough idle1840
The engine shakes, stumbles, or runs unevenly — ignition, fuel, or compression.
Coolant or antifreeze leak618
Losing coolant — external leaks or, worse, coolant entering the engine.
Excessive oil consumption or leak1441
The engine burns or leaks oil between changes — rings, seals, or PCV.
Airbag / SRS warning light1894
The airbag (SRS) light is on — the system may be disabled until repaired.
Airbag didn't deploy / unexpected deployment746
Airbags that failed to deploy in a crash, or deployed without one — a critical safety allegation.
Electrical / dashboard issues3406
Flickering lights, dead battery, or glitchy electronics and infotainment.
A/C or heater not working712
Climate control blowing the wrong temperature or nothing at all.
Unintended acceleration715
The vehicle accelerates without driver input — a serious, heavily-scrutinized allegation.
Steering pull or wander792
The car pulls to one side or wanders — alignment, suspension, or steering.
Window, door, or lock failure1630
Power windows, door latches, locks, or sunroof that stop working.