2020 Mercedes-Benz GLS 450 problems
The 2020 Mercedes-Benz GLS 450 has 65 complaints on file with NHTSA. The largest share (28%) concerns electrical system. After that come engine (14%) and forward collision avoidance (14%).
At a glance
- Complaints
- 65 filed with NHTSA
- Most reported
- Electrical system 28% of complaints
- Crashes and fires
- 9 and 3
- Injuries and deaths
- 7 and 0
Source: NHTSA owner complaints
Where the complaints are
Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.
What the data shows
Safety-related details: 9 complaints mention a crash; 3 complaints mention a fire; 7 injuries reported. Its complaints are more severe on average than those of 81% of model years in our database.
Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2020 ranks 1st most-complained-about out of 4 model years of the Mercedes-Benz GLS 450 with enough data (52 complaints in that window). It is also covered by 22 safety recall campaigns.
What owners wrote
A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.
03/17/2023 driving on US1 coming up to speed after pulling onto highway after cars passed I went 0.2 miles and was looking at my driver side mirror ( no traffic on road ahead of me) when I hit something that pushed my big SUV toward oncoming traffic. I held wheel and muscled car to side of road stopping short of a telephone pole. Car was upright I had trouble loosening seat belt while my wife was hanging forward into hers. Dog harnessed in back seat was ok Got out of car to see a car hauler 30?
Tl* the contact owns a 2020 mercedes-benz gls450. The contact stated she noticed a fuel odor coming from the vehicle when the windows were open. The contact sought medical attention due to breathing problems. The vehicle was repaired but continue to experience the failure. The contact stated on 12/21/2019, while driving 7 MPH, when she heard multiple loud abnormal noises (explosions). The vehicle was taken back to the same dealer, where it was diagnosed that the cadillac converter and turbo needed to be replaced.
The contact owns a 2020 Mercedes Benz GLS. The contact stated that while driving on the highway, the rear door window trim bars on the passenger side detached from the window. The vehicle was taken to the dealer where they diagnosed as a rear door window trim detachment however the vehicle was not repaired. The manufacturer was not notified of the issue. The approximate failure mileage 65,000.