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Audi A6 / S6 / RS6 Most Common Problems

44
control arm / tension strut / thrust arm / lateral link
33
valve cover gasket
31
CV boot
26
water pump
23
CV joint / axle / half shaft
20
wheel bearing / hub
19
thermostat
16
motor mount
15
engine seal / gasket, other or unspecified or unknown (oil leak)
15
radiator hose / engine coolant pipe
15
vacuum lines or hoses
14
coolant reservoir / expansion tank
14
fuel pump
14
strut (suspension)
13
ignition coil pack
13
oxygen sensor
12
alternator
12
coolant temperature sensor
12
tie-rod / tie-rod end
11
A/C switch
 
5   10   15   20   25   30   35   40   45   50  
Chart is based on 1019 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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