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Toyota Prius Most Common Problems (All Years)

149
bulb: headlight
118
wheel bearing / hub
95
battery pack (hybrid or EV)
80
water pump
36
inverter cooling pump (EV or hybrid)
36
strut (suspension)
34
engine coolant control valve
23
audio / nav / infotainment display / touch screen
20
A/C recharge (no parts replaced)
20
blower motor / HVAC interior fan
18
battery pack module / computer (EV or hybrid)
17
under body panel / splash shield
15
catalytic converter
15
end link or bushing for stabilizer bar
15
inverter (EV or hybrid)
14
A/C compressor
13
damper / shock absorber
13
engine intake cleaning / throttle body cleaning
13
exhaust flex pipe / mid pipe / tail pipe
12
coil spring
 
15   30   45   60   75   90   105   120   135   150  
Chart is based on 2497 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.