2020 Mercedes-Benz GLE 450 Engine Problems
- Complaints
- 9about this part
- Share
- 35%of 26 total for the year
- Median mileage
- 5,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the engine of the 2020 Mercedes-Benz GLE 450, 35% of the 26 complaints for this model year. Where a mileage was given, the median is 5,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Driving down the highway at 70 MPH and '48v battery malfunction' warning goes off, along with a yellow check engine light. A few seconds later a 'coolant' error message pops up and a red check engine light comes on. Car looses power completely and I'm unable to accelerate at all. Call flashes a message of 'pull over and turn the engine off'. Fortunately no one was behind me and I was able to coast safely to the side of the highway before the car stalled completely. …”
NHTSA complaint #11352040, filed 2020-08, 4,900 miles“Warning light coolant too hot shut engine off comes on repeatedly and this is unable to be fixed. Light comes on while vehicle is in motion. Was told by mercedes this was a faulty warning light. Yesterday this came on and my engine shut itself off while the vehicle was in motion on a busy street. I was almost hit by another vehicle as I lost power to the car on a main road. I barely rolled into a parking lot. Could have been a horrible (fatal) disaster had I been on the freeway. …”
NHTSA complaint #11365446, filed 2020-10, 6,600 miles“My vehicle was in for a normal service to have the spark plugs replaced. However I was told that the engine wiring harness had become brittle (apparently a common and reoccurring problem with my vehicle) and would likely cause misfiring after changing spark plugs. This did indeed happen and if I didn’t elect to have the harness replaced, it would have put myself and my son in danger. It was a very costly repair (over $4000) for something that the vehicle manufacturer is at fault for.”
NHTSA complaint #11732609, filed 2026-04“48 v battery malfunctioned, I was advised that it was not charging. Which LED to additional messages including the car was now overheating, to pull the car over and not drive it. At that point I lost engine power and was unable to even drive the car up a slight him.”
NHTSA complaint #11449255, filed 2022-01“1. First message: 48v battery malfunction 2. Second message: stop the vehicle coolant is not working vehicle is overheating. 3. Lost power, I could only drive 10 miles per hour. I pulled to the side of the road and was almost rear ended by a semi truck. There are several online occurrences reporting these same messages. It is extremely dangerous when a vehicle loses all power while on a busy highway. The vehicle was inspected. Mercedes aware of a bulletin with this issue.”
NHTSA complaint #11476213, filed 2022-07Related service bulletins
- 11038185Sep 26, 2026Complaint Sporadic warning message in instrument cluster "Engine oil pressure, stop switch off vehicle" (or similar) is shown in red on vehicles with low mileage. Cause…
- 11038176Sep 17, 2026Complaint Red coolant warning in instrument cluster. Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for fault…
- 11034506Jul 2, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167: SW has been released. Update the FSAM to the latest SW version. 465, 290, 118, 243…
- 11034016Jun 22, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167: SW has been released. Update the FSAM to the latest SW version. 465, 290: Software is…
- 11030302Mar 27, 2026Complaint -Check engine light illuminated. -Engine runs rough. -Poor shifting or jerking when accelerating. -Fault codes stored related to mixture formation, injector quantity…
- 11029925Mar 2, 2026Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy This fault code does not cause a drivability concern and will clear itself within 2-3 key…
- 11028807Feb 14, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software does not correspond to current…
- 11026596Dec 6, 2025Complaint <p>ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist, ESP® trailer stabilization, Adaptive Brake Lights, Lane Keeping Assist, Blind Spot Assist, Adaptive Brake…
- 11015545Mar 4, 2025Complaint Check engine light illuminated Fault code present in MRG3 control unit P22C800 or P22C900 - The valve of the exhaust gas turbocharger is jammed. Cause Check valve in…
- 11014684Feb 28, 2025Complaint Red oil pressure warning in instrument cluster One of the below fault codes is stored in powertrain control unit N127: P052497 The oil pressure is too low. The system…
Engine: other model years
Other parts of the 2020 Mercedes-Benz GLE 450
14 complaintsVehicle speed control
7 complaintsOther or unknown
4 complaintsBack-over prevention (rear camera)
2 complaintsSeats
2 complaintsAir bags
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsFuel system
1 complaintsLane departure
1 complaintsSeat belts
1 complaintsSuspension
1 complaints
← All problems reported for the 2020 Mercedes-Benz GLE 450
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology