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Audi A3 / S3 / RS3 Most Common Problems

36
CV boot
28
thermostat
26
wheel bearing / hub
25
ignition coil pack
20
fuel pump
17
CV joint / axle / half shaft
16
A/C compressor
16
diverter valve / bypass valve / blow-off valve (BOV) for turbo
15
carbon buildup on engine intake or engine valves
13
water pump
11
intake manifold
10
coolant temperature sensor
9
blower motor / HVAC interior fan
9
evap solenoid / purge valve / vent valve
9
seat side or back trim (not seating surfaces)
8
damper / shock absorber
8
engine cooling fan
8
fuel injector
8
radiator
7
cam follower (for fuel pump)
 
4   8   12   16   20   24   28   32   36   40  
Chart is based on 651 vehicles in TrueDelta's reliability survey.
These are the problems owners most commonly reported on TrueDelta's Car Reliability Survey. For many models not all entries have been coded yet, so focus on the relative numbers rather than the absolute numbers. Usually when people say "they all have this problem," the problem in question actually affects between 10 percent and 20 percent of all cars. We aren't counting wear items like brake pads and rotors that truly do require periodic replacement on all cars.

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