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2012 Mercedes-Benz SLK-Class problems, recalls and owner complaints
What the 2012 Mercedes-Benz SLK-Class has been recalled for, how often it fails the UK MOT and what owners report, from official government data. Updated October 25, 2026.
- 0safety recalls
- 12owner complaints
- 0crash reports
- 0fire reports
- 23%fail the UK MOT
The most complained-about Mercedes-Benz SLK-Class year on file: 12 complaints, against an average of 5 for the other 3 model years.
Every Mercedes-Benz SLK-Class model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2012 Mercedes-Benz SLK-Class?
The components named most often in the 12 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
Has the 2012 Mercedes-Benz SLK-Class been recalled?
NHTSA lists no safety recalls for the 2012 Mercedes-Benz SLK-Class as of October 25, 2026. Recalls can be issued at any time, so check your VIN before you rely on this.
Is the 2012 Mercedes-Benz SLK-Class recalled in the UK or Europe?
Recalls issued by the UK's DVSA and through the EU's Safety Gate system that cover this model and build period. European models can differ from U.S. ones, and "years estimated" means the recall gave no build dates, so confirm your own car with your registration or VIN.
UK DVSAThe driver's air bag may have a chemical change to its propellant over time
Risk: The driver's airbag may have a chemical change to its propellant over time.
Fix: Replace the driver's airbag.
UK DVSAThe driver's air bag may have a chemical change to its propellant over time
Risk: The driver's airbag may have a chemical change to its propellant over time.
Fix: Replace the driver's airbag
UK DVSAEngine control unit software to be updated
Risk: Improve the vehicle emissions via software updates.
Fix: Update the relevant control unit's software and if necessary replace the NOx sensors.
UK DVSAFaulty control unit may cause vehicle to perform outside specification
Risk: Where a control unit coding was updated in a workshop between 3 December 2016 and 5 December 2016 the coding may not correspond to the specification and may trigger unplanned action in the vehicle. The safety and emissions systems may not react as design intent.
Fix: Recall the vehicles that are likely to be affected and update the software in the corresponding control units.
UK DVSAFuel may leakYears estimated
Risk: The flange of the fuel filter may leak due to a non-compliance in the supplier's production process. Should this occur a fuel odour may arise or fuel escape.
Fix: Recall the vehicles that are likely to be affected to replace the fuel filter.
EU Safety GateFaulty configurations of the control units (traction systems, signal recording triggering modules, engine control units and headlights)…Faulty configurations of the control units (traction systems, signal recording triggering modules, engine control units and headlights) could cause one or more control units to malfunction, which could increase the risk of an accident. The exhaust emissions exceed the legal limits, posing a risk to the environment.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe driver and passenger airbags of the company Takata in vehicles with ammonium nitrate gas generators without drying agents could, under…The driver and passenger airbags of the company Takata in vehicles with ammonium nitrate gas generators without drying agents could, under certain climate conditions, lead over time to a chemical change in the fuel.In the event of an accident triggering the release of the driver or passenger airbag, this change could cause the gas generators to burst. If a gas generator ruptures, the airbag would then have no restraining function and loose parts from the gas generator could reach the vehicle interior. This would increase the risk of injury for passengers.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
How often does the 2012 Mercedes-Benz SLK-Class fail its MOT?
Why they failed: the share of failed tests with at least one fault in each area (a test can fail on several). Cars first registered in 2012, tested in Great Britain in 2023; first registration is usually, but not always, the model year. Source: DVSA anonymised MOT tests and results, Open Government Licence v3.0.
What do 2012 Mercedes-Benz SLK-Class owners report?
12 of the 12 complaints, the most recent for the most-reported components, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
While driving on the highway the roof polycarbonate top started to buffet at speed prompting a rapid deceleration of the car for fear of the roof flying off. The car has been evaluated at the Mercedes dealer which stated that the roof was delaminating. I am now unable to drive to convertible with the top up for fear of a mechanical failure placing other motorists at risk of flying debris.
My mechanic says it's the fuel filter and it has been discontinued. I am a single woman and I am now afraid to drive my car. l am stressed about breaking down or being killed. Please help me. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2012 Mercedes-Benz SLK350. The contact stated that while driving at an undisclosed speed, a loud noise was heard coming from the rear of the vehicle. The contact stated that as she pulled over and parked the vehicle, the low tire pressure warning light illuminated for the driver's side rear tire. When the contact exited the vehicle, she saw that the rim hub cap had detached from the driver's side rear wheel. The vehicle was then towed to an independent mechanic who removed the tire and sent it to a local dealer. The mechanic at the local dealer made the contact aware of a…
The contact owns a 2012 Mercedes-Benz SLK350. The contact stated while driving approximately 45 MPH, the front passenger’s side headrest erroneously deployed. During the failure no crash had occurred, and no passenger was seated in the vehicle. The cause of the failure was not determined. The local dealer was notified of the failure but not assistance was offered. The manufacturer was not yet contacted. The failure mileage was 48,000.
GLOVE BOX FACING HAS DETACHED FROM THE LOWER SIDE. IT HANGS FURTHER OUT THAN THE GLOVE BOX AND COULD BE A DANGER TO THE PASSENGER IN THE EVENT OF AN ACCIDENT OR EVEN A HARD STOP. IT STARTED COMING APART 3 YEARS AGO. FROM MY RESEARCH ON THE INTERNET IT IS A KNOWN PROBLEM WITH THIS MODEL CAR. IT CAME APART OVER TIME FROM HEAT AND SUB-STANDARD GLUE. *TR
ELECTRIC STEERING WHEEL LOCKS, WHEN YOU GO BACK TO THE CAR ALL THE ELECTRICAL SYSTEM IS NOT WORKING THE CAR IS DEAD AS DEAD, IF YOU HAPPEN TO BE IN A BAD NEIGHBORHOOD YOUR LIFE IS IN DANGER, THE CAR MUST BE TOWED TO THE MERCEDES DEALER, PRACTICALLY WHAT HAPPEN TO SO MANY CAR OWNER I KNOW IS THAT EIS / ESL THE EIS MODULE WHERE YOU INSERT KEY TO START AND THE ESL STEERING LOCK ASSEMBLY LOCATE AT THE BOTTOM OF THE COLUMN THAT FAILS. THE COST OF REPAIR ($1700.) AS NOTHING TO DO WITH THE RISK YOU TAKE TO BE STRANDED ANYWHERE WITH NO PRIOR DIAGNOSTIC FLAG. MERCEDES STEERING LOCKS IS NOT AN…
TL* THE CONTACT OWNS A 2012 MERCEDES BENZ SLK350. THE CONTACT STATED THAT THE VEHICLE HAD A BAD ODOR. THE VEHICLE WAS TREATED (CLEANED, VAPORIZED, FILTERS WERE CHANGED, INTERIOR WAS IONIZED) BY THE DEALER; HOWEVER, THE ODOR RECURRED CONTINUOUSLY. THE FAILURE MILEAGE WAS APPROXIMATELY 20,000.
TL* THE CONTACT OWNS A 2012 MERCEDES BENZ SLK350. THE CONTACT STATED THAT THE OCCUPANT CLASSIFICATION SYSTEM WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO AN INDEPENDENT MECHANIC. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 5,800.
MOVED FROM SAN FRANCISCO TO PALM SPRINGS, UPON BEING IN THE DESERT WITH INCREASED TEMPERATURES, MY CAR STARTED EMITTING STRONG FUMES THAT SMELL LIKE BURNING CRAYONS, THOUGHT IT WAS COMING FROM EXHAUST BECAUSE IT WAS BURNING MY EYES AND CAUSING HEADACHES. TOOK INTO DEALER AT PALM SPRINGS MERCEDES, AND THEY INFORMED ME THAT THEY HAVE HAD THIS PROBLEM BEFORE DUE TO THE WAX THAT IS IN THE BODY OF CAR TO PROTECT FROM CORROSION. THEY STATED THAT WHEN THE WAX HEATS UP IT MELTS AND CAUSES THIS ODOR. THEY REMOVED THE WAX FROM THE INTERIOR OF DOORS, BUT THIS DID NO RESOLVE THE ISSUE. THEY HAVE…
TL* THE CONTACT OWNS A 2012 MERCEDES BENZ SLK 350. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 60 MPH, THE CONTACT HEARD A LOUD POP FROM THE REAR OF THE VEHICLE. THE REAR OF THE VEHICLE SWERVED TO THE LEFT. THE VEHICLE WAS TAKEN TO THE DEALER, WHO STATED THAT BOTH CONTROL ARMS NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 28,000.
TRANSMISSION WOULDN'T GO INTO GEAR. CAR LOST POWER ON FREEWAY. MANY REPAIRS LAST ONE BEING ELECTRONIC GAS PEDAL. *TR ## VIN PASSED ## MERCEDES SLK350 2012 ##
I PARKED MY CAR WITH AN ALMOST FULL TANK OF GAS WHILE I WAS AT WORK. AFTER LEAVING WORK, I STARTED THE CAR AND WHILE I WAS DRIVING I SMELLED A STRONG GASOLINE ODOR, AND IN ABOUT 3 MILES THE ENGINE ACTED LIKE IT WAS RUNNING OUT OF FUEL, THEN DIED ON A FREEWAY OFF-RAMP DUE TO FUEL EXHAUSTION. A CALTRANS (OR SAN JOSE) FREEWAY SAFETY CAR CAME BY AND PUT ABOUT 2 GALLONS OF GAS IN MY TANK, BUT AS SOON AS THE ENGINE STARTED WE BOTH SMELLED RAW GASOLINE. I THEN DROVE ABOUT 1/8 OF A MILE TO THE NEAREST PARKING LOT AND STOPPED, AND WE BOTH SMELLED VERY STRONG GASOLINE ODOR AND FOUND FUEL LEAKING ONTO…
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2012 Mercedes-Benz SLK-Class: questions owners ask
Is the 2012 Mercedes-Benz SLK-Class reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 12 complaints with NHTSA about the 2012 Mercedes-Benz SLK-Class; the most common categories were fuel/propulsion system (3, 25%), air bags (1, 8.3%), electrical system (1, 8.3%). There are no safety recalls listed for this model year. 1 injury was reported.
What are the most common problems with the 2012 Mercedes-Benz SLK-Class?
Across 12 owner complaints filed with NHTSA, the categories mentioned most often are fuel/propulsion system (25% of complaints), air bags (8.3% of complaints), electrical system (8.3% of complaints), engine (8.3% of complaints), power train (8.3% of complaints). One complaint can name several components.
Does the 2012 Mercedes-Benz SLK-Class have any recalls?
As of October 2026, NHTSA lists no safety recalls for the 2012 Mercedes-Benz SLK-Class. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
Check your own SLK-Class
Counts are a starting point, not a verdict: popular models collect more complaints because more of them are on the road, and NHTSA does not verify individual reports. To see whether a recall is still open on your car, enter your VIN at nhtsa.gov/recalls (U.S.) or your registration at check-vehicle-recalls.service.gov.uk (UK). Had a safety problem? Report it to NHTSA; complaints are what trigger investigations and recalls.
Data: NHTSA Office of Defects Investigation recall and complaint databases (public domain), DVSA anonymised MOT results (Open Government Licence v3.0), DVSA vehicle recalls (Open Government Licence v3.0), EU Safety Gate alerts (© European Union), retrieved October 25, 2026. Model year 2012 only.