Follow TrueDelta

TrueDelta at Facebook TrueDelta at Google+ TrueDelta at Twitter

Mercedes-Benz GL-Class repairs by problem area

Engine (29%)

Transmission and Drivetrain (3%)

Brakes and Traction Control (4%)

Suspension and Steering (25%)

Electrical and Air Conditioning (23%)

Paint, Rust, Leaks, Rattles, and Trim (7%)

Other (9%)

Chart based on 527 repairs.

Mercedes-Benz GL-Class engine repair cost distribution

$2500+ (10%)

$1000 - $2499 (29%)

$500 - $999 (35%)

$100 - $499 (22%)

< $100 (4%)

Chart based on 49 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten Mercedes-Benz GL-Class repair histories. Log in or join us to see them all.

2008 Mercedes-Benz GL-Class 4dr SUV

turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD

1000 mi M-B insisted on reflash of ECU whenever vehicle appeared in shop. Need for reflash unknown - M-B wouldn't tell. 
5000 mi Improper "check engine oil level at next fillup" message appears often (3-4 time in 70 mi trip). Oil level always OK. Dealer says sensor defect causes message. No new (redesigned) sensors available. Problem is NOT new - 2007 CDI engines often had same ... 
15000 mi False oil level warning appeared sometimes. Oil never low. 
24000 mi C/S Low oil level warning in I/C again. Oil level not too low. Repeat of problem previously 'repaired'. Oil level sensor replaced with sensor with new part number. Oil pan replaced because original oil pan warped when it was removed - too much sealant.. 
35000 mi MORE new software updates for rear SAM module. Newer software available and installed on top of new software previously installed. All values and coding checked out correct both before and after update. 
52000 mi

US $1671
CEL on >2 wks. Local indy couldn't diagnose. Dealer found servomotor failed. This servo drives an air door inside intake manifold [provides engine braking?]. Servo was reported to have failed because oil dripped onto shaft, parts seized. 
76000 mi CEL appeared. 1st trip to dealer found that diff pressure sensor at DPF filter failed high. Sensor replaced. Fault would not clear. New DPF ordered.  2nd trip DPF replaced. Same day CEL reappeared. 3rd trip found temp sensor found unplugged during DPF repair and not plugged back in. 
95000 mi

US $3000
Bad oil leak from center of engine rear. O ring seals to oil cooler had failed - a defect known to Mercedes and the subject of a TSB. Dealer replaced seals with new design. 
100000 mi

US $65
Car stopped without warning while driving. After waiting, car started and ran normally but with MIL set (check engine symbol). Dealer ran diagnostic on fuel system and determined MIL was due to low fuel pressure. Fuel filter was NOT plugged. 

Return to top

2008 Mercedes-Benz GL-Class 4dr SUV

382-horsepower 5.5L V8 7-speed shiftable automatic AWD

6000 mi Electrical codes #2193 and #0436. Replaced right 02 sensor which controls the right side heater. 

Return to top

2007 Mercedes-Benz GL-Class

Engine not specified

22000 mi Able to get the new parts. Installed and the problem is gone. 

Return to top

2007 Mercedes-Benz GL-Class 4dr SUV

turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD

1500 mi new intercooler hose installed per factory directive 
6000 mi turbo intercooler hose becoming detached 
7000 mi turbo intercooler hose issue. vehicle was bought back by Mercedes on 6/27/2007 
2000 mi towed to dealer, intercooler hose replaced 
15000 mi towed to dealer, fuel pump replaced 
81000 mi

US $1250
CEL was coming on and the car turned off multiple times while driving. CEL would turn off after a day. Took car to dealer. Dealer could not replicate the problem. Nothing was fixed on the car but it does run normally at the present time. 
88000 mi

US $2300
Vehicle intermittantly shuts down. Fuel pump was replaced but it did not solve the problem. Dealer could not find cause of problem. Vehicle traded in. 

Return to top

2007 Mercedes-Benz GL-Class 4dr SUV

335-horsepower 4.7L V8 7-speed shiftable automatic AWD

15000 mi Warranty claim- engine check light came on over X-mas Holiday. One cylinder not firing. Dealer replaced overcoil / leads. Problem resolved as of 12/28/07 
26000 mi CEL came on... dealer replaced cam position sensor... 1 week later problem re-appeared... fuel injector replaced... it has been 3 weeks with no issue... problem presumably resolved... 
45000 mi Cylinder head port plug (not spark plug) failed causing oil to leak out. Nuisance defect. Dealer 'repaired' /patched plug while in the interim of getting new parts on b/o. Will repair under warranty 
47000 mi While taking in for PM, I observed a Power steering fluid leak, MB replaced hose / clamp under warranty, problem has not recurred. 
51300 mi Check engine light... looked up code and got a 'fuel too rich' code. Dealer diagnosed problem to be one of the O2 sensors. Replaced under extended warranty... 

Return to top

2007 Mercedes-Benz GL-Class 4-door

turbocharged 6-cylinder diesel automatic AWD

10000 mi intercooler hoses replaced with updated versions (diesel engine) 
14000 mi Check engine light came on, GL shut down. Restarted and drove but check engine light remained. Took in next day for service. Part ordered from Germany so Gl sat for 4 full business days before part arrived. New part was fuel rail (diesel). 

Return to top

Mercedes-Benz GL-Class Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently Mercedes-Benz GL-Class problems occur, check out our car reliability stats.