DT: CONTACT STATED WHILE DRIVING HER VEHICLE ON THE FREEWAY THE TRANSMISSION FAILED. THE VEHICLE DID ACT UP A COUPLE OF TIMES IN THE PAST. THE VEHICLE LOST POWER. THE VEHICLE WAS TAKEN TO THE DEALERSHIP, AND THEY WILL NOT TAKE IT BACK OR FIX THE TRANSMISSION UNDER WARRANTY. THE REPAIRS WILL HAVE TO BE PAID BY THE CONTACT. *AK
2005 mercedes-benz SL-Class powertrain problems
moderate 5 complaints filed with NHTSA · avg repair $2,500
Complaints
5
Recalls
0
Crashes
0
Avg fix
$2,500
What owners are reporting 4 most recent
TL* THE CONTACT OWNS A 2005 MERCEDES-BENZ SL500. WHILE DRIVING 75 MPH, THE VEHICLE WENT INTO LIMP MODE AND THE SPEED DECREASED TO 35 MPH. IN ADDITION, THE ABS AND ESP WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF PALM BEACH (4000 OKEECHOBEE BLVD, WEST PALM BEACH, FL 33409, (561) 609-0902), BUT WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHAN…
ENGINE WIRE HARNESS FAILURE DUE TO BAD INSULATION/BIODEGRADABLE INSULATOR COVER RESULTING IN VEHICLE STOP WHEN A ASR LIGHT COME ON AND CAUSING POSSIBLE FIRE OR ACCIDENT WHILE THE CAR STOP SHILE IS IN MOVEMENT,VERY DANGEROUS I STOP TO DRIVE THIS CAR 4 YEARS AGO/// REVERSE GEAR JUST STOP WORK DUE TO THE BIG DEFECT FROM FACORY A BEEN SEE TONS OF CARS WITH EXACLTU THE SAME PROBLEMS.
WHILE DRIVING IN TRAFFIC AT APPROXIMATELY 40 MPH THE TRANSMISSION DISENGAGED (SLIPPED) SO MUCH SO THAT THE RPM'S SHOT UP AND THE CAR NO LONGER HAD POWER TO THE DRIVE WHEELS. I NEEDED TO MOVE OVER 2 LANES THROUGH TRAFFIC TO PULL OVER TO THE CURB AND GET OUT OF TRAFFIC. ONCE I STOPPED THE CAR AT THE SIDE OF THE ROAD THE TRANSMISSION ENGAGED AND THE CAR REGAINED POWER THE THE REAR WHEELS AND I WAS AB…
Common questions
How serious is the powertrain problem on the 2005 mercedes-benz SL-Class?
It's a documented issue but not catastrophic. 5 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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