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BMW 3-Series Most Common Problems

154
ignition coil pack
143
water pump
124
thermostat
116
valve cover gasket
102
oil filter housing gasket / oil filter stand gasket
63
fuel pump
60
control arm bushing / compliance bushing / tension strut bushing / thrust arm bushing
58
coolant reservoir / expansion tank
58
window regulator mechanism
56
wheel bearing / hub
52
radiator hose / engine coolant pipe
51
control arm / tension strut / thrust arm / lateral link
50
damper / shock absorber
45
radiator
45
starter
44
fuel injector
42
oxygen sensor
40
idler pulley for accessory / serpentine / drive belt
40
oil pan seal / gasket
36
engine seal / gasket, other or unspecified or unknown (oil leak)
 
16   32   48   64   80   96   112   128   144   160  
Chart is based on 4053 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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