Hyundai Kona vs Pontiac Bonneville

Both cars' complete complaint records, side by side.

Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.

Measure	Hyundai Kona	Pontiac Bonneville
Complaints on file	1,089	2,580
Model years covered	2018–2026	1977–2005
Worst model year	2019	1998
Best model year	2026	2004
Crashes reported	73	135
Fires reported	33	180
Injuries reported	58	117
Deaths reported	1	0
Most complained-about part	Engine & Cooling	Engine & Cooling
Share of complaints involving harm	15.2%	16.7%

Hyundai Kona by year

116 246 196 149 142 100 77 51 12

18 19 20 21 22 23 24 25 26

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 414 38.0%

Electrical System 139 12.8%

Other & Unspecified 135 12.4%

Transmission & Drivetrain 96 8.8%

Driver Assist & Collision Avoidance 88 8.1%

Acceleration & Cruise Control 42 3.9%

Brakes 33 3.0%

Fuel & Propulsion 29 2.7%

Pontiac Bonneville by year

1 4 2 2 1 1 2 3 24 20 35 45 26 139 183 123 330 181 188 359 176 301 179 113 67 38 37

77 78 79 81 82 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 615 23.8%

Electrical System 324 12.6%

Brakes 256 9.9%

Steering 218 8.4%

Transmission & Drivetrain 171 6.6%

Fuel & Propulsion 169 6.6%

Airbags 150 5.8%

Windows, Mirrors & Wipers 133 5.2%