Total Complaints
89 filings
MERCEDES-BENZ GL450 · model year
89 NHTSA complaints, 10 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2008MERCEDES-BENZGL450 carries 89 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 10 crashes, 1 fire, 12 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2008 GL450 is steering with 21 filings, followed by suspension (14) and air bags (6). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2008 GL450. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
89 filings
Crashes Reported
10 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| STEERING | 21 |
| SUSPENSION | 14 |
| AIR BAGS | 6 |
| ENGINE | 5 |
| UNKNOWN OR OTHER | 4 |
| SERVICE BRAKES | 4 |
| VISIBILITY | 3 |
| SERVICE BRAKES, HYDRAULIC | 3 |
| ELECTRICAL SYSTEM | 3 |
| POWER TRAIN | 3 |
| WHEELS | 3 |
| ENGINE AND ENGINE COOLING:ENGINE | 2 |
| SEATS | 2 |
| SEAT BELTS | 2 |
| WHEELS:LUGS/NUTS/BOLTS/STUDS | 1 |
The contact owns a 2008 Mercedes-Benz GL450. The contact stated that upon starting the vehicle, there was an abnormal shaking coming from the engine while attempting to steer the vehicle. No warning lights were illuminated. The vehicle was taken to a local independent mechanic to be diagnosed, and the contact was informed that the power steering reservoir and the power steering lines were faulty and needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 196,000.
Mileage: 196,000
UNKNOWN
A flash from the right headlight had occured. I thought it was the bulb, but turns out the ballist was shorted out. I removed the assembly from the vehicle to change the ballist and because I want to also change the lens on the assembly. When I got the old lens off, I found most of the wiring has heat distress, causing the casings to flake off. I have photos of this issue. The headlights are a high energy assembly and this unsafe condition can lead to a vehicle fire if not taken care of immediately.
A flash from the right headlight had occured. I thought it was the bulb, but turns out the ballist was shorted out. I removed the assembly from the vehicle to change the ballist and because I want to also change the lens on the assembly. When I got the old lens off, I found most of the wiring has heat distress, causing the casings to flake off. I have photos of this issue. The headlights are a high energy assembly and this unsafe condition can lead to a vehicle fire if not taken care of immediately.
The contact owns a 2008 Mercedes-Benz GL450. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) and the contact had the vehicle towed to a local dealer. The contact was informed by the dealer that the recall repair could not be performed until the rear brake lines and a transmission diagnostic test was performed. The contact stated that the dealer had exceeded a reasonable amount of time for the recall repair. Additionally, the manufacturer was made aware of the issue and was unable to have the dealer complete the recall. The contact had not experienced a failure. Parts distribution disconnect.
Last Wednesday Morning June 06, 2023 I started vehicle up to move it closer to my apartment. Once I shifted into "Drive", immediately the engine revved up and vehicle accelerated in high rate of speed across the parking lot, I was applying the brakes, but they were not stopping the vehicle, it then slammed into wooded area and crashed head first into creek beyond the wooded area. I was dazed and bleeding from cut beneath my nose, I climbed out of vehicle and back up the incline the vehicle crashed downward into. Baltimore County Police responded and I explained to Officer what had happened. He advised me to contact my Insurance Carrier and wrote the Incident Report #. During the time while awaiting my vehicle's retrieval from the wooded area, I then photographed and video recorded the damages once retrieved. The air bags did not deploy when the vehicle crashed yet the complete front grill and hood of the vehicle was smashed in, front tire blown.
Last Wednesday Morning June 06, 2023 I started vehicle up to move it closer to my apartment. Once I shifted into "Drive", immediately the engine revved up and vehicle accelerated in high rate of speed across the parking lot, I was applying the brakes, but they were not stopping the vehicle, it then slammed into wooded area and crashed head first into creek beyond the wooded area. I was dazed and bleeding from cut beneath my nose, I climbed out of vehicle and back up the incline the vehicle crashed downward into. Baltimore County Police responded and I explained to Officer what had happened. He advised me to contact my Insurance Carrier and wrote the Incident Report #. During the time while awaiting my vehicle's retrieval from the wooded area, I then photographed and video recorded the damages once retrieved. The air bags did not deploy when the vehicle crashed yet the complete front grill and hood of the vehicle was smashed in, front tire blown.
Last Wednesday Morning June 06, 2023 I started vehicle up to move it closer to my apartment. Once I shifted into "Drive", immediately the engine revved up and vehicle accelerated in high rate of speed across the parking lot, I was applying the brakes, but they were not stopping the vehicle, it then slammed into wooded area and crashed head first into creek beyond the wooded area. I was dazed and bleeding from cut beneath my nose, I climbed out of vehicle and back up the incline the vehicle crashed downward into. Baltimore County Police responded and I explained to Officer what had happened. He advised me to contact my Insurance Carrier and wrote the Incident Report #. During the time while awaiting my vehicle's retrieval from the wooded area, I then photographed and video recorded the damages once retrieved. The air bags did not deploy when the vehicle crashed yet the complete front grill and hood of the vehicle was smashed in, front tire blown.
The contact owns a 2008 Mercedes-Benz GL450. The contact stated that the vehicle had been at the dealer for almost two months. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
The contact owns a 2008 MERCEDES BENZ GL450. The contact stated their vehicle had a warning light that stated the seat belt on the passenger side had failed. The vehicle was included in a recall NHTSA Campaign Number: 22V315000 (SERVICE BRAKES, HYDRAULIC) could cause additional issues with the vehicle's seat belt. The contact took the vehicle to a certified mechanic who was unable to diagnose the failure. The vehicle had not been repaired for the seat belt. The manufacturer was not made aware. The approximate failure was unknown. The contact also stated that the 3rd row seat will not go down all the way and the issue also pops up on the dashboard.
At slow speed itâs hard to turn. Steering fluid is fine
The contact owns a 2008 Mercedes-Benz GL450. The contact stated while driving approximately 10 MPH and approaching a stop light, an unknown "malfunction" warning light illuminated. The contact attempted to veer to the side of the road but noticed that the steering wheel had lost power steering functionality. The contact then forcefully steered the steering wheel and veered into the right turn lane. The contact turned off the vehicle and turned on her hazard lights. Upon restarting the vehicle, the contact noticed that the power steering functionality had not returned. The vehicle was towed to an independent mechanic, where it was diagnosed that the failure was related to NHTSA Campaign Number: 08V682000 (Steering). The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was notified of the failure. The failure mileage was approximately 115,000.
Mileage: 115,000
VEHICLE CAUGHT FIRE IN MY GARAGE. VEHICLE WAS RUNNING FINE 2 HRS PRIOR. MY HUSBAND ENTERED THE VEHICLE TO RUN AN ERRAND AND THE VEHICLE WOULD NOT START. TONS OF LIGHT CAME ON THE DASH, INCLUDING THE AIRBAG HAD DEPLOYED, THOUGH THE AIRBAG HAD NOT DEPLOYED. VEHICLE WAS OFF BUT STILL SOUNDED LIKE IT WAS RUNNING. WINDOWS OR NOTHING WOULD WORK. WE RAISED THE HOOD AND WAS NOT ABLE TO DISCOVER THE ISSUE. WE COULD SMELL SOMETHING, BUT WAS NOT SURE WHAT IT WAS. WE PROCEEDED TO GO INSIDE OUR HOME, BUT LEFT THE GARAGE AND HOOD OPEN SO THE SMELL FROM THE VEHICLE WOULD LEAVE THE GARAGE. COUPLE HOURS LATER WE HEARD A HISSING SOUND IN THE GARAGE. MY HUSBAND WENT OUTSIDE AND DISCOVERED THE TRUCK ON FIRE. NOT SURE WHERE IT STARTED, WHEN SAW IT WAS UNDERNEATH THE VEHICLE. WE EXTINGUISHED THE FIRE BUT THE FIRE DEPT WAS CALLED OUT. FIRE DEPT SOUND LIKE AN ELECTRICAL ISSUE. THIS COULD HAVE BEEN DEADLY HAD WE NOT HEARD THE SOUND AND HAD THE GARAGE DOOR OPEN. MY INSURANCE COMPANY HAS BEEN CONTACTED.
The vehicle has a steering problem resulting from the pin.
STEERING WHEEL DON'T WORK PROPER WAY HOW SHOULD BE. STEERING WHEEL GETTING FROZEN WHEN IS VEHICLE DRIVING.NHTSA CAMPAIGN ID # 08V682000
Mileage: 156,000
POWERING STEERING LOCKS,SUSPENSION AIR STRUTS LOSING AIR CAN HEAR WHEN DRIVING
POWERING STEERING LOCKS,SUSPENSION AIR STRUTS LOSING AIR CAN HEAR WHEN DRIVING
TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ GL450. THE CONTACT BOUGHT THE VEHICLE TWO MONTHS AGO. WHILE DRIVING, THE VEHICLE SHUT OFF SUDDENLY. THE VEHICLE HAD TO BE TRAVELING AT A HIGH RATE OF SPEED IN ORDER TO BE COASTED SAFELY TO THE SIDE OF THE ROAD. THE CONTACT CALLED FERGUSON SUPERSTORE (1601 N ELM PL, BROKEN ARROW, OK 74012, (918) 258-1800) AND WAS INFORMED THAT THEY DID NOT HAVE THE TOOLS TO CHECK A MERCEDES-BENZ AND ADVISED THE CONTACT TO CONSULT WITH A MERCEDES DEALER. THE CONTACT WAS CURRENTLY SCHEDULING AN APPOINTMENT WITH A MERCEDES DEALER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS UNKNOWN.
THE AIRMATIC SUSPENSION HAS FAILED, THE TRUCK IS SITTING LOW THE AIR COMPRESSOR BLEW INTO PIECES FROM WORKING TO HARD. THIS IS A BIG PROBLEM WITH MERCEDES AIRMATIC SHOCKS ON MANY DIFFERENT MODEL... PLEASE HELP US ,THIS SHOULD BE A RECALL.. I ONLY HAVE ABOUT 45000 MILES ON MY TRUCK.
Mileage: 45,000
VEHICLE KEEPS LOSING AIR, STEERING WHEEL HARD TO TURN, CAR LEANING TO RIGHT SIDE, AIRBAG LIGHTS KEEPS COMING ON, THE CAR LOOSES POWER WHEN TURNING. DURING THE NIGHT CAR WILL LOWER IT SELF. ABS WILL COME ONE, SMELL SMOKE. WAS TOLD BY DEALER I HAVE LEAKS IN THE ENGINE, HAD TO REPAIR SUSPENSION, AND DIFFERENT STRUTS AND PARTS WHILE DURING WARRANTY AND AFTER SPENDING THOUSANDS OF DOLLARS. I NOTIFIED MBUSA, AND APPARENTLY THIS CAR HAS BEEN HAVING AIRBAGS AND SUSPENSION ISSUES REPAIRED BEFORE I BOUGHT IT, THE PREVIOUS OWNER HAS BEEN DOING THE SAME REPAIRS. WITHIN A MONTH OF REPAIRING ON THING, THE CAR STARTS TO LEAN TO RIGHT, MAKE NOISE, LEAK FLUIDS FROM WHO KNOWS WHERE.
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.