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Audi A3 / S3 / RS3 Most Common Problems

28
CV boot
21
ignition coil pack
20
thermostat
20
wheel bearing / hub
19
fuel pump
16
CV joint / axle / half shaft
13
water pump
12
A/C compressor
12
carbon buildup on engine intake or engine valves
11
diverter valve / bypass valve / blow-off valve (BOV) for turbo
9
seat side or back trim (not seating surfaces)
8
damper / shock absorber
8
intake manifold
7
coolant temperature sensor
7
end link or bushing for stabilizer bar
7
evap solenoid / purge valve / vent valve
7
fuel injector
6
blower motor / HVAC interior fan
6
cam follower (for fuel pump)
6
control arm bushing / compliance bushing / tension strut bushing / thrust arm bushing
 
3   6   9   12   15   18   21   24   27   30  
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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