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Problems by Component

NHTSA complaint components ranked by volume

Based on 2.1M+ NHTSA owner complaints filed with the federal government. Click any component to see the worst-affected vehicles.

1
Electrical System193,404
2
Engine171,739
3
Power Train138,636
4
Air Bags129,075
5
Steering118,415
6
Unknown Or Other117,209
7
Service Brakes79,557
8
Vehicle Speed Control73,625
9
Fuel/propulsion System63,252
10
Structure — Body49,981
11
Suspension49,191
12
Power Train — Automatic Transmission48,266
13
Exterior Lighting42,973
14
Engine And Engine Cooling40,765
15
Service Brakes, Hydraulic — Antilock/traction Control/electronic Limited Slip33,132
16
Engine And Engine Cooling — Engine30,746
17
Fuel System, Gasoline29,889
18
Service Brakes, Hydraulic28,708
19
Tires25,318
20
Visibility/wiper24,346

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The average unexpected repair costs $500–$2,000. A BumperScan report tells you exactly what to watch for — before you buy.

Check Your CarBased on 2.1M+ owner complaints
21
Seats21,636
22
Seat Belts21,503
23
Electronic Stability Control (esc)21,260
24
Structure20,256
25
Air Bags — Frontal20,191
26
Wheels19,610
27
Engine And Engine Cooling — Engine — Gasoline18,407
28
Forward Collision Avoidance — Automatic Emergency Braking12,800
29
Structure — Body — Door10,898
30
Suspension — Front10,842
31
Service Brakes, Hydraulic — Foundation Components — Disc — Rotor10,285
32
Electrical System — Ignition9,925
33
Tires — Tread/belt9,472
34
Visibility9,178
35
Latches/locks/linkages8,944
36
Visibility — Power Window Devices And Controls8,445
37
Structure — Frame And Members8,311
38
Forward Collision Avoidance — Adaptive Cruise Control7,954
39
Exterior Lighting — Headlights7,869
40
Service Brakes, Hydraulic — Foundation Components7,854
41
Forward Collision Avoidance — Warnings7,623
42
Latches/locks/linkages — Doors — Latch7,473
43
Engine And Engine Cooling — Cooling System7,251
44
Equipment — Appliance — Air Conditioner6,891
45
Equipment6,891
46
Electrical System — Ignition — Switch6,615
47
Electrical System — Instrument Cluster/panel6,471
48
Visibility — Windshield Wiper/washer6,413
49
Power Train — Manual Transmission6,254
50
Fuel System, Gasoline — Storage — Tank Assembly6,129
51
Suspension — Rear6,080
52
Vehicle Speed Control — Accelerator Pedal5,707
53
Fuel System, Gasoline — Delivery — Fuel Pump5,701
54
Visibility — Windshield5,610
55
Service Brakes, Hydraulic — Foundation Components — Disc5,045
56
Seat Belts — Front — Buckle Assembly4,913
57
Suspension — Front — Control Arm — Lower Ball Joint4,803
58
Engine And Engine Cooling — Exhaust System4,575
59
Electrical System — Wiring4,460
60
Visibility — Windshield Wiper/washer — Motor4,302
61
Seat Belts — Front — Retractor4,263
62
Engine And Engine Cooling — Exhaust System — Manifold/header/muffler/tail Pipe4,224
63
Electrical System — 12v/24v/48v Battery4,091
64
Service Brakes, Hydraulic — Foundation Components — Disc — Pads3,993
65
Steering — Steering Wheel/handle Bar3,973
66
Suspension — Front — Control Arm — Upper Ball Joint3,932
67
Electrical System — Wiring — Interior/under Dash3,928
68
Electrical System — Wiring — Front Underhood3,858
69
Steering — Hydraulic Power Assist System3,854
70
Visibility — Defroster/defogger/hvac System3,803
71
Seat Belts — Front — Anchorage3,781
72
Vehicle Speed Control — Cruise Control3,764
73
Visibility — Sun/moon Roof Assembly3,579
74
Steering — Rack And Pinion3,531
75
Electrical System — Alternator/generator/regulator3,528
76
Seats — Front Assembly — Recliner3,492
77
Electrical System — Horn3,443
78
Fuel System, Gasoline — Fuel Injection System3,364
79
Back Over Prevention3,122
80
Lane Departure — Assist3,059
81
Parking Brake2,999
82
Steering — Linkages — Tie Rod Assembly2,952
83
Fuel System, Other2,927
84
Fuel System, Diesel2,878
85
Visibility — Glass, Side/rear2,875
86
Tires — Sidewall2,859
87
Structure — Frame And Members — Underbody Shields2,838
88
Air Bags — Frontal — Sensor/control Module2,796
89
Suspension — Front — Springs — Coil Springs2,694
90
Power Train — Axle Assembly2,685
91
Engine And Engine Cooling — Engine — Gasoline — Belts And Associated Pulleys2,680
92
Interior Lighting2,678
93
Service Brakes, Electric2,617
94
Lane Departure — Blind Spot Detection2,613
95
Power Train — Clutch Assembly2,579
96
Service Brakes, Hydraulic — Foundation Components — Master Cylinder2,569
97
Air Bags — Side/window2,553
98
Power Train — Driveline — Differential Unit2,514
99
Service Brakes, Hydraulic — Foundation Components — Disc — Caliper2,466
100
Service Brakes, Hydraulic — Foundation Components — Hoses, Lines/piping, And Fittings2,435
100 component categories tracked