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Engine coolingPart report

2007 Mercedes-Benz GL450 Engine cooling Problems

Complaints
6about this part
Share
5%of 115 total for the year
Median mileage
8,820miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the engine cooling of the 2007 Mercedes-Benz GL450, 5% of the 115 complaints for this model year. Where a mileage was given, the median is 8,820 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.

“My 2007 Mercedes-Benz gl-450 with 36,900 miles suddenly lost power and was barely responsive while driving home yesterday (2/17/2010), and then the car required 3 or 4 attempts to shift into reverse as I was trying to back into my driveway. I drove the car to the mercedes dealership this morning. This problem first happened a few months ago (august 2009 at 34,500 miles) during highway driving with my family in the vehicle while we were out of town on a vacation trip. …”

NHTSA complaint #10311851, filed 2010-02, 36,900 miles

“On three separate occasions the 'charge air hose' connecting to the turbo intercooler system on my 2007 mercedes gl320cdi has failed. The hose has been replaced four times total. According to internet message boards there are numerous failures that mb has failed to fix including mine. On all occasions of the incident my entire family has been in the vehicle. While under acceleration the hose fails and forward speed is lost. On two occasions I have been on the interstate and driving on the incline of a hill where other vehicles were behind me. It is not safe.”

NHTSA complaint #10192444, filed 2007-06, 6,500 miles

“The contact owns a 2007 mercedes benz GL450. While driving 65 MPH, the vehicle shut off without warning. The contact pulled to the side of the road and the vehicle was towed to the dealer. The dealer has been unable to determine the cause of the failure. This failure has occurred previously. The current and failure mileages were 11,139.”

NHTSA complaint #10212299, filed 2007-12, 11,139 miles

“The contact owns a 2007 mercedes benz GL450. The contact stated that the vehicle would stall sporadically without warning. The vehicle would first power down and the lights would flicker on and off before stalling. The dealer was in the process of diagnosing the failure. The manufacturer promised to call the contact back with some assistance for repairs. The vehicle was not repaired. The failure mileage was 1,000 and the current mileage was 15,000.”

NHTSA complaint #10433954, filed 2011-11, 1,000 miles

“The contact owns a 2007 mercedes benz GL450. The contact heard a squeaking noise when he depressed the brake pedal and the stopping distance increased. The dealer was unable to diagnose the cause of failure, however, they grinded the edges of the brake pads to reduce the squeaking noise. The speed was unknown. The failure mileage was 4,000 and current mileage was 6,600. The dealer recommended chamfering the brake pads to alleviate the noise. The dealer stated vehicle low on oil. Updated 09/2807”

NHTSA complaint #10202934, filed 2007-09, 4,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200824%
200765%

Other parts of the 2007 Mercedes-Benz GL450

Seats
39 complaintsElectrical system
27 complaintsTransmission and drivetrain
17 complaintsSuspension
11 complaintsBrakes
10 complaintsSteering
9 complaintsVehicle speed control
7 complaintsBody and structure
6 complaintsEngine
5 complaintsFuel system
4 complaintsAir bags
3 complaintsEquipment
3 complaints

← All problems reported for the 2007 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