hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
56,443 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Mercedes-Benz GL450 engine problems

engine problem

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2007 Mercedes-Benz GL450 Owner Comments

problem #5

Dec 242012

GL450 8-cyl

  • 79,000 miles


I was driving home from work and my transmission began to not shift out of third gear going up a hill.. I took it to the dealer after this happened another 10 times and they said is a intake flap not closing properly and that they couldn't do anything about it. Now its happening so often im afraid to put my children in the car on account that every time it stops shifting when I'm in the middle of traffic and lose all power.

- Owings Mills, MD, USA

problem #4

May 222010


  • 41,000 miles
Vehicle will not change gear and become sluggish with terrible fuel consumption. Tried fuel treatment, problem gets better then return. The problem is intermittent.

- Matthews, NC, USA

problem #3

Aug 032012

GL450 8-cyl

  • 72,715 miles
Speed control became null during acceleration at 72 mph. During the time of acceleration, transmission made an odd sound then speedometer moved from 72 mph to 35 mph in just seconds and car would not go over 35 mph regardless of how much pressure was applied to the accelerator.

- Lakeland, FL, USA

problem #2

Aug 082007


  • 17,000 miles
1. poor battery life and alternator life in 2007 gl 450 2. engine died and electronics died at highway speeds, reported to Mercedes Benz corporation with no resolve.3. lift gate constantly malfunctions and does not close.

- Niceville, FL, USA

problem #1

May 192010


  • 72,500 miles
The contact owns a 2007 Mercedes Benz GL450. While attempting to accelerate from approximately 70 mph to 75 mph with the cruise control activated, the vehicle involuntarily decelerated then stalled without warning. The contact moved the vehicle off the roadway and was able to restart the vehicle. When the vehicle was restarted, the check engine light was illuminated on the dashboard. She then shut off the vehicle for approximately five minutes and when restarting, the vehicle operated as normal. The vehicle was taken to the dealer where the contact was awaiting a diagnosis of the failure. The VIN was not available at the time of the complaint. The failure and current mileages were 72,500.

- Bridgewater, NJ, USA

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