2012 Mercedes-Benz SLK350 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2012 Mercedes-Benz SLK350, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Fuel system327.3%
- Electrical19.1%
- Engine19.1%
- Other / unspecified19.1%
- Powertrain (other)19.1%
- Seat belts19.1%
- Steering19.1%
- Airbags19.1%
- Suspension19.1%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
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)
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 ##
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
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 INCONVENIENCE , BUT A SAFETY CONCERNS OR HARDSHIP THAT THIS ISSUE PRESENTS. THIS IS HAPPEN FOR THE MODEL 08+ AS MY SELF AN ELECTRICAL ENGINEER AND INSPECT THIS ESL UNIT THE DECLINE OF WORKMANSHIP IN THE ASSEMBLY BY PRESSURING TWO PARTS TO ESTABLISH AN ELECTRIC CONTACT TO THE MOTOR THAT RELEASE ON/OFF THE STEERING COLUMN IS ASININE & STUPID, AND SHOULD BE RECALLED AND CORRECTED.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
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 ##
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
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 crack on the side wall. Additionally, the contact stated that the tire was taken to the original place of purchase, and the claims team determined the failure was caused by damage from the rim and advised the contact to call the vehicle manufacturer for assistance. The vehicle was not repaired; however, the spare tire was installed. The manufacturer was made aware of the failure. The approximate failure mileage was 105,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
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 ##
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
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 INCONVENIENCE , BUT A SAFETY CONCERNS OR HARDSHIP THAT THIS ISSUE PRESENTS. THIS IS HAPPEN FOR THE MODEL 08+ AS MY SELF AN ELECTRICAL ENGINEER AND INSPECT THIS ESL UNIT THE DECLINE OF WORKMANSHIP IN THE ASSEMBLY BY PRESSURING TWO PARTS TO ESTABLISH AN ELECTRIC CONTACT TO THE MOTOR THAT RELEASE ON/OFF THE STEERING COLUMN IS ASININE & STUPID, AND SHOULD BE RECALLED AND CORRECTED.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .