Car Symptoms
Start from what you hear, smell, see or feel. Each symptom lists possible causes without ranking, safe checks and related fault codes.
By what you notice
Noises
Smells
Leaks
Vibrations
Smoke
Starting Problems
Driving And Performance
Symptom checkerAnswer a few questions about what you notice. We show the possible causes, how urgent it is and safe checks you can do.
Start checkingAll symptoms
ABS Activates At Low SpeedHigh riskAdBlue Leak Or White CrystalsNormal riskAir Conditioning Cuts In And OutNormal riskAir Conditioning Not ColdNormal riskAutomatic Gearbox Will Not Shift UpNormal riskAutomatic Only Starts In NeutralNormal riskBattery Keeps Going FlatNormal riskBlack Smoke From The ExhaustNormal riskBlue Smoke From The ExhaustHigh riskBrake Fluid LeakCritical riskBrake Lights Not WorkingHigh riskBrakes DraggingHigh riskBurning Clutch SmellNormal riskBurning Oil SmellHigh riskBurning Plastic Or Electrical SmellCritical riskBurning Rubber SmellHigh riskBurning Smell From The CarHigh riskBuzzing Or Rattling From The DashboardNormal riskCar Alarm Goes Off By ItselfNormal riskCar Bounces Too MuchHigh riskCar Brakes By Itself (Phantom Braking)High riskCar Feels Floaty And BouncyHigh riskCar In Limp ModeHigh riskCar Jerks Or Surges While DrivingNormal riskCar Jumps Out Of GearHigh riskCar Only Starts With A Jump StartNormal riskCar Pulls To One SideNormal riskCar Pulls To One Side When BrakingHigh riskCar Pulls Under AccelerationNormal riskCar Shakes When AcceleratingHigh riskCar Shakes When Starting The EngineNormal riskCar Sits Lower At One CornerHigh riskCar Starts Then DiesNormal riskCar Wanders On The MotorwayHigh riskCar Wobbles At Low SpeedCritical riskCar Won’t StartNormal riskCar Won’t Start Or Runs Badly In Wet WeatherNormal riskCar Won’t Start When HotNormal riskCar Won’t Go Into GearNormal riskCar Won’t Start In Cold WeatherNormal riskCentral Locking Not WorkingNormal riskChirping Noise From The EngineNormal riskClicking Noise From A WheelNormal riskClicking Noise When TurningHigh riskClicking When Trying To StartNormal riskClunk When Shifting Into Drive Or ReverseNormal riskClunking Over BumpsNormal riskClutch Bites Very HighNormal riskClutch Fluid LeakHigh riskClutch Judder When Pulling AwayNormal riskClutch Pedal Stays On The FloorCritical riskClutch SlippingHigh riskCoolant LeakHigh riskCoolant Level Drops With No Visible LeakHigh riskCoolant Reservoir BubblingCritical riskCreaking When Turning The SteeringNormal riskCruise Control Not WorkingNormal riskDelayed Engagement Into Drive Or ReverseNormal riskDiesel Smell Inside The CarHigh riskDiesel Won’t StartNormal riskDifferential Oil LeakNormal riskDim Or Flickering LightsNormal riskDPF Regenerates Very OftenNormal riskElectric Parking Brake Stuck OnNormal riskElectric Windows Not WorkingNormal riskEngine Cranks But Won’t StartNormal riskEngine Cranks SlowlyNormal riskEngine Hard To StartNormal riskEngine Keeps Running After Switching OffNormal riskEngine Knocking Or PingingHigh riskEngine Loss Of PowerNormal riskEngine Oil Level RisingHigh riskEngine OverheatingCritical riskEngine Revs But Car Doesn’t MoveCritical riskEngine Shakes At IdleNormal riskEngine Stalls While Driving Or IdlingHigh riskEngine Temperature FluctuatesNormal riskEngine Temperature Stays LowNormal riskEngine Using Too Much OilHigh riskExhaust Smell Inside The CarCritical riskFuel Gauge Reading WrongNormal riskFuel Leak Under The CarCritical riskFuel Smell From The CarHigh riskFuse Keeps BlowingHigh riskGear Lever VibratesNormal riskGrease On The Inside Of The WheelNormal riskGrey Smoke From The ExhaustHigh riskGrinding Noise When BrakingCritical riskGrinding Noise When StartingNormal riskGrinding Or Buzzing Noise When Pulling AwayNormal riskGrinding When Changing GearNormal riskGurgling Sound From The DashboardNormal riskHard Brake PedalCritical riskHard To Start After RefuellingNormal riskHarsh Or Delayed Gear ShiftsNormal riskHeadlight Not WorkingHigh riskHeated Rear Window Not WorkingNormal riskHeater Fan Not WorkingNormal riskHeater Fan Works Only On HighNormal riskHeater Only Warm When DrivingNormal risk