2009 Mercedes-Benz GL450 Engine Problems
- Complaints
- 2about this part
- Share
- 13%of 15 total for the year
- Median mileage
- 149,650miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2009 Mercedes-Benz GL450, 13% of the 15 complaints for this model year. Where a mileage was given, the median is 149,650 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.
“The contact owns a 2009 Mercedes-Benz GL450. The contact stated that the ABS and check engine warning lights were illuminated, and the struts had failed. The vehicle was taken to the dealer to be repaired under NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic); however, the dealer informed the contact that the vehicle needed to be diagnosed prior to the recall repair, due to the failure. The contact declined to pay the diagnostic fee, and the vehicle was not diagnosed or repaired. The contact stated that the dealer failed to honor the recall repair. …”
NHTSA complaint #11724677, filed 2026-03, 156,000 miles“The contact owns a 2009 Mercedes-Benz GL450. The contact stated while driving at an undisclosed speed, the brake pedal was depressed, and the vehicle started shuddering. The check engine warning light was illuminated. The vehicle was towed to the dealer who informed the contact that the vehicle was not safe to drive. The vehicle was towed to the dealer where the recall repair of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) was completed; however, after the recall repair was completed, the vehicle failed to start. …”
NHTSA complaint #11490054, filed 2022-10, 143,300 milesEngine: other model years
Other parts of the 2009 Mercedes-Benz GL450
8 complaintsBrakes
3 complaintsOther or unknown
3 complaintsSuspension
3 complaintsElectrical system
1 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaints
← All problems reported for the 2009 Mercedes-Benz GL450
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