2007 Mercedes-Benz GL450 power train problems
17 owner complaints filed with NHTSA name the power train on the 2007 Mercedes-Benz GL450 — 15% of all complaints for this model year.
What owners report
“The contact owns a 2007 Mercedes-Benz GL450. The contact stated that while driving at an undisclosed speed, the transmission slipped and failed to shift into the intended gear. The vehicle was towed to the dealer where it was diagnosed with transmission failure. The dealer replaced the transmission…”
filed Oct 17, 2022
“I was driving on the highway at 70 mph and the car will downshift and I could only go 40 mph no matter how hard I stepped on the gas. I had to pull over, turn the car off, wait ten minutes and then start it up again. Again this week it also happened.”
filed Nov 13, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause…
LI35.30-P-058566 · Service Bulletin/Repair Instructions · issued Jul 14, 2026Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in…
LI33.30-P-056665 · Service Bulletin/Repair Instructions · issued May 21, 2025
Power Train problems in other GL450 years
| Year | Reports | Share |
|---|---|---|
| 2014 GL450 | 2 | 10% |
| 2013 GL450 | 3 | 8% |
| 2012 GL450 | 5 | 11% |
| 2011 GL450 | 2 | 4% |
| 2010 GL450 | 1 | 2% |
| 2008 GL450 | 4 | 7% |
Other reported problem areas on the 2007 Mercedes-Benz GL450
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.