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2015 Mercedes-Benz SLK-Class problems, recalls and owner complaints
What the 2015 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
- 4owner complaints
- 0crash reports
- 0fire reports
- 17%fail the UK MOT
4 complaints, against an average of 8 for the other 3 Mercedes-Benz SLK-Class 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 2015 Mercedes-Benz SLK-Class?
The components named most often in the 4 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
Has the 2015 Mercedes-Benz SLK-Class been recalled?
NHTSA lists no safety recalls for the 2015 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 2015 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 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 DVSAEmission output requires improvement
Risk: Emission output requires improvement
Fix: Update software in the engine control unit and replace the NOx sensor if required.
UK DVSABrakes may overheat creating a risk of smoke and/or fire
Risk: The software for the Electronic Stability Program (ESP) is faulty. The fault could lead to a low residual pressure in the hydraulic system so the brakes are applied and gain heat. This increased heat will apply the brakes further and could adversely affect the brake fluid. Fire in the wheel housing cannot be ruled out.
Fix: Recall the vehicles that are likely to be affected and update the software for the ESP.
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 DVSAElectrical fault could allow vehicle to roll away when left parked
Risk: On certain vehicles fitted with 9 speed transmission the back up battery may not connect during main battery failure. This may prevent selection of Park on the transmission or operation of the electronic parking brake.
Fix: On affected vehicles adapt harness to manufacturer's specification and recode the system.
UK DVSARisk of fire
Risk: The high pressure fuel lines have not been manufactured to the correct specification which over time can lead to crack formation and fuel leaking. Fuel escaping in the presence of an ignition source could lead to fire.
Fix: Recall the vehicles that are likely to be affected and replace the high pressure fuel lines.
UK DVSAEngine may fail
Risk: The camshaft could break and damage the engine due to it not being manufactured to the correct specification. If the condition occurs it will lead to a sudden loss of drive thereby increasing the risk of a collision.
Fix: Recall the vehicles that are likely to be affected and replace the intake camshaft.
UK DVSAEngine may fail
Risk: On certain petrol engines the camshafts may not have been correctly manufactured. They may fail causing engine damage and the engine to stall
Fix: On affected vehicles replace camshafts.
UK DVSAEngine may fail
Risk: The camshaft could break and damage the engine due to it not being manufactured to the correct specification. If the condition occurs it will lead to a sudden loss of drive thereby increasing the risk of a collision.
Fix: Recall the vehicles that are likely to be affected and replace the exhaust camshaft.
UK DVSAOil may leak
Risk: On certain diesel engines the 'O' ring may not have been produced to the correct specification. This may allow oil to leak and contaminate the environment. If excessive oil is lost engine damage may occur.
Fix: On affected vehicles replace the chain tensioner sealing ring.
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
EU Safety GateThe back-up cable supplying current to the ignition switch might not be connected properly.If this additional power supply is not available, it means that, in the event of failure of the main battery after the engine is switched off, neither the electronic parking brake nor the "P" transmission position would activate and the vehicle could start rolling on its own.
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 GateCracks may form in the high-pressure fuel pipes leading to a fuel leak and a vehicle fire.
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 gasket seal for the engine's chain tensioner may display incorrect settling behaviour.Over time, this may result in the chain tensioner detaching from the threaded hole on the cylinder head and the leakage of engine oil. The loss of large amounts of engine oil may contaminate the road, leading to a possible hazard for traffic following behind.
Measures: Type of economic operator taking notified measure(s): Other; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
How often does the 2015 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 2015, 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 2015 Mercedes-Benz SLK-Class owners report?
4 of the 4 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.
I am submitting this complaint to report a serious high‑pressure fuel system failure on my 2015 Mercedes‑Benz SLK 250 equipped with the M274 2.0L turbocharged engine, which resulted in a sudden and dangerous loss of propulsion. While accelerating to pass another vehicle at roadway speed, the engine abruptly lost power, stalled, and the vehicle immediately entered limp mode, leaving me exposed to active traffic with no warning and unable to complete the maneuver safely. The incident triggered diagnostic fault code P000277, consistent with a fuel pressure or fuel control system malfunction. This…
THIS IS THE PROBLEM I AM HAVING WITH MY VEHICLE: Nature of the Problem: The recall involves the ESC system software, which may incorrectly keep the brakes slightly applied. This can cause the brake components to heat up over time, potentially affecting braking performance and increasing the risk of a crash. Additionally, the dragging brakes may overheat, raising the risk of a fire. Recall Initiation: The recall began on June 9, 2017. Mercedes-Benz USA, LLC (MBUSA) is responsible for notifying owners and will update the ESC system software free of charge. I GOT THIS INFORMATION WHEN I DID A…
Good afternoon, My GPS just shut down. i've never had a car do this! Its a Becker by Harman [XXX] Modelno. : Becker Map Pilot P/N 2710171 EC:104 Assembly date 2025 Type BMP M077 A 166 900 58 15 ZGS(ZB)001 A 172 901 48 04 zgs(HW)001 A 166 902 10 07 ZGS(SW)001 Can it be replaced? my dealership said they went out of business and can't be replaced? thank you [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The roof panel on my car separated from the body of the vehicle during normal highway driving. This failure is similar to recent prior recalls on other Mercedes Benz models where, due to failed glue bonding, sliding panels on those models detached from vehicles during driving conditions. At least one news article described those component failures as being due to a "defect." In my case, the entire roof panel separated from and blew off the car. The loss of a roof from the body of a car during driving conditions creates obvious safety issues for the occupants of the vehicle and for those in…
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2015 Mercedes-Benz SLK-Class: questions owners ask
Is the 2015 Mercedes-Benz SLK-Class reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 4 complaints with NHTSA about the 2015 Mercedes-Benz SLK-Class; the most common categories were fuel/propulsion system (1, 25%), service brakes (1, 25%), structure (1, 25%). There are no safety recalls listed for this model year.
What are the most common problems with the 2015 Mercedes-Benz SLK-Class?
Across 4 owner complaints filed with NHTSA, the categories mentioned most often are fuel/propulsion system (25% of complaints), service brakes (25% of complaints), structure (25% of complaints). One complaint can name several components.
Does the 2015 Mercedes-Benz SLK-Class have any recalls?
As of October 2026, NHTSA lists no safety recalls for the 2015 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 2015 only.