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BMW Z3 Most Common Problems (All Years)

9
valve cover gasket
7
engine intake hose / tube / boot
7
water pump
6
alternator
6
thermostat
5
damper / shock absorber
5
ignition coil pack
5
radiator
4
camshaft position sensor
4
coolant reservoir / expansion tank
4
idler pulley for accessory / serpentine / drive belt
3
A/C recharge (no parts replaced)
3
ABS wheel speed sensor
3
body / frame (other than rust)
3
clutch slave cylinder
3
control arm / tension strut / thrust arm / lateral link
3
power steering hose / line / o-ring
3
seat rails, shifting or jammed seat
3
strut (suspension)
2
A/C line / hose / seal / o-ring
 
1   2   3   4   5   6   7   8   9   10  
Chart is based on 173 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.