BMW, 3 Series, F30/F31/F34/F35 Common Issues
1. Oil leaks
Occurrence: 12%Cost to repair: $800Symptoms:
Green or brown fluid under the car, engine noise, low oil pressure
2. Faulty water pumps
Occurrence: 8%Cost to repair: $1200Symptoms:
Overheating engine, steam coming from radiator, coolant leaks
3. Transmission issues (DCT)
Occurrence: 6%Cost to repair: $1000Symptoms:
Jerky shifting, transmission slippage, failure to engage gears
4. Rear main seal leaks
Occurrence: 5%Cost to repair: $600Symptoms:
Oil leaks from rear of engine, oil spots on garage floor
5. Fuel pump failures
Occurrence: 4%Cost to repair: $900Symptoms:
Car will not start, stuttering or hesitation when accelerating
6. Sway bar end link failures
Occurrence: 3%Cost to repair: $400Symptoms:
Clunking or knocking sounds from front of car, uneven tire wear
7. Rear differential noise
Occurrence: 2%Cost to repair: $700Symptoms:
Whining or grinding noises when turning, vibration in the back of the car
8. ABS and brake issues
Occurrence: 2%Cost to repair: $800Symptoms:
Spongy brake pedal, ABS light on dashboard, unusual braking behavior
9. Electric Power Steering (EPS) failures
Occurrence: 1.5%Cost to repair: $900Symptoms:
Stiff or unresponsive steering, EPS light on dashboard
10. Throttle body failures
Occurrence: 1%Cost to repair: $500Symptoms:
Car won't accelerate properly, stuttering or hesitation when accelerating
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