2017 Mercedes-Benz GLS 450 problems
The 2017 Mercedes-Benz GLS 450 has 53 complaints on file with NHTSA. The largest share (15%) concerns electrical system. After that come engine (15%) and fuel system (11%).
At a glance
- Complaints
- 53 filed with NHTSA
- Most reported
- Electrical system 15% of complaints
- Crashes and fires
- 2 and 14
- Injuries and deaths
- 1 and 0
- Typical mileage
- 13,000 miles 19 complaints with mileage
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%.
When problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 10 |
| 20k to 40k miles | 2 |
| 40k to 60k miles | 4 |
| 60k to 80k miles | 0 |
| 80k to 100k miles | 0 |
| 100k to 120k miles | 0 |
| 120k to 140k miles | 3 |
| 140k to 160k miles | 0 |
| 160k to 180k miles | 0 |
| 180k to 200k miles | 0 |
| 200k+ miles | 0 |
What the data shows
Among the 19 complaints that report mileage, the typical (median) problem appeared at about 13,000 miles.
Safety-related details: 2 complaints mention a crash; 14 complaints mention a fire; 1 injury reported. Its complaints are more severe on average than those of 93% 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 2017 ranks 3rd most-complained-about out of 4 model years of the Mercedes-Benz GLS 450 with enough data (33 complaints in that window). It is also covered by 8 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.
Tl* the contact owned a 2017 mercedes-benz gls450. After the vehicle was parked for approximately 30 seconds, it caught fire. Prior to the failure, the contact noticed that the cup holder and armrest console were hot. The contact noticed an odor of burning rubber in the vehicle. The fire department extinguished the fire. A fire report was filed. The vehicle was destroyed, towed, and quarantined at the insurance company's impound lot. The cause of the fire was not determined.
I drove up and down the western united states on highways and city streets. I drove 16 hours a day for about 1 week. I received a check engine light with a warning that there was a small evap leak. After being serviced this warning did not appear again. I believe the thresholds were updated to ignore small evap leaks. Around october 28, 2019, I noticed the floor board of my vehicle overheating. I also detected more exhaust fumes entering the cabin.
When in distronic+ which includes lane keeping assist, my car swerves sharply out of its lane for no apparent reason which, while infrequent, could cause an accident. I have taken my car to the local dealer resulting in no cause identification and have provided an email to mercedes customer service with no response yet. I previously spoke to mercedes customer service on the phone and they suggested taking it back to the dealer. Thanks for your help in addressing this matter.
The contact owns a 2017 Mercedes-Benz GLS450. The contact heard an abnormal humming sound when the vehicle was started, and the humming sound grew louder over time. The contact believed that the humming sound was coming from the driver's side headlamp. The contact stated that the headlamp was equipped with a small internal fan to dissipate heat. Additionally, other electrical failures were occurring, and the vehicle was taken to a local dealer.