FaultScore

Hyundai Ioniq Plug-In Hybrid vs Mercedes Benz GL350

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 Ioniq Plug-In Hybrid Mercedes Benz GL350
Complaints on file 41 102
Model years covered 2018–2022 2010–2017
Worst model year 2010
Best model year 2011
Crashes reported 9 2
Fires reported 1 4
Injuries reported 5 8
Deaths reported 0 0
Most complained-about part Electrical System Airbags
Share of complaints involving harm 36.6% 13.7%

Hyundai Ioniq Plug-In Hybrid by year

18 19 20 21 22
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Electrical System 7 17.1%
Transmission & Drivetrain 5 12.2%
Brakes 4 9.8%
Acceleration & Cruise Control 4 9.8%
Driver Assist & Collision Avoidance 4 9.8%
Other & Unspecified 4 9.8%
Body & Structure 3 7.3%
Seat Belts 3 7.3%

Mercedes Benz GL350 by year

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

What breaks

Airbags 28 27.5%
Engine & Cooling 22 21.6%
Brakes 9 8.8%
Fuel & Propulsion 8 7.8%
Other & Unspecified 7 6.9%
Transmission & Drivetrain 5 4.9%
Steering 3 2.9%
Suspension 3 2.9%