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EnginePart report

2021 Mercedes-Benz GLE 450 Engine Problems

Complaints
7about this part
Share
47%of 15 total for the year
Median mileage
3,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the engine of the 2021 Mercedes-Benz GLE 450, 47% of the 15 complaints for this model year. Where a mileage was given, the median is 3,000 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.

“I was driving at full speed on the interstate (75mph) when the vehicle died completely. I had only seconds to maneuver the vehicle to the shoulder. There was no indication of a service issue with the vehicle prior to this incident. The car is/was approximately 2 weeks old, with about 500 miles of usage. Vehicle would not restart so I could attempt to get to a safer location.”

NHTSA complaint #11432776, filed 2021-09

“Driving down a multi-lane highway at 70 mph, a 48V battery malfunction warning goes off as well as the yellow check engine light. A few seconds later a ‘coolant’ error alert pops up. SUV loses acceleration with power dropping from 70 mph to 55 mph to 35 mph. Another message displayed on screen warning me to “Pull over and turn the engine off.” Narrowly missing being hit from the back, I was able to coast to an upcoming exit into a store’s parking lot before the car stalled completely.”

NHTSA complaint #11536714, filed 2023-08

“Was driving down a 2 lane road at about 55 MPH, and a warning light message appeared on the dash and said battery no longer charging then another message that said coolant overheating vehicle shutting down appeared. And the car would no longer accelerate. So I had to pull over on a busy 2 lane road and turn off my car and turn it back on, and then the car was working normally again. This could have been very bad if it was on a multi-lane highway. My safety was put at risk. …”

NHTSA complaint #11459441, filed 2022-04

“The contact owns a 2021 Mercedes-Benz GLE450. The contact stated while driving at various speeds the vehicle loss motive power. The 48V battery malfunction and coolant hot turn-off vehicle message were displayed on the instrument panel. The battery indicator warning light was illuminated. The vehicle was taken to the local dealer and diagnosed with a software issue. The contact was informed that the software needed to be updated. The vehicle was repaired however, the failure recurred. The manufacturer was not notified of the failure. The approximate failure mileage was 3,000.”

NHTSA complaint #11424125, filed 2021-07, 3,000 miles

“On two separate occasions recently, the vehicle suddenly lost all power without warning and stopped. Luckily, these incidents did not occur while driving in high speed traffic, and the car restarted once shut off. When it lost power, all warning lights came on at once. After the first incident, dealer updated the 48v system and esp control modules and The vehicle is operating as designed. The first incident was on November 9, the second incident was on November 29.”

NHTSA complaint #11442064, filed 2021-11

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2023343%
2022750%
2021747%
2020935%
2016728%

Other parts of the 2021 Mercedes-Benz GLE 450

Electrical system
9 complaintsOther or unknown
3 complaintsTransmission and drivetrain
3 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2021 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