2012 Mercedes-Benz SLK350
Problems, Recalls & Reliability Report
Quick Summary
The 2012 Mercedes-Benz SLK350 has 15 owner complaints filed with NHTSA — that's 1.0x the segment average of 15. The most common issue is fuel system problems (20% of all complaints), specifically: 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 caltra.
15
Total Complaints
0
Recalls Issued
—/5
Safety Stars
1.0x
vs Segment Avg
Known Problems(top 5 of 8)
FUEL SYSTEM
3 complaints- • 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 CALTRA
- • 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 ##
- • 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)
“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 CALTRA”
— NHTSA complaint filing
When Problems Appear on the 2012 Mercedes-Benz SLK350
Based on 14 owner complaints that included an odometer reading. Median mileage at time of complaint: 17K miles. Most complaints cluster in the 0-30K miles range.
Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.
Fuel Cost Calculator for 2012 Mercedes-Benz SLK350
Live EIA pricesBased on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.
5-Year Gas Price History
EIA weekly retail data · 2021 → todaySource: US Energy Information Administration weekly retail gasoline prices.
Estimated Insurance Cost for 2012 Mercedes-Benz SLK350
How this estimate is calculated
Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.
Maintenance & Warranty
Recommended Mercedes-Benz SLK350 Service Intervals
Service A / Service B alternating schedule. Requires MB-approved oil (229.5 spec typically).
"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.
Mercedes-Benz New-Vehicle Warranty Coverage
EQ EV battery warranty is 10 years/155,000 miles
These are the terms for a new Mercedes-Benz. If you're buying a used 2012 SLK350, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Mercedes-Benz dealer for VIN-specific remaining warranty.
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 15 owner complaints for this specific year, here's what to check or ask about:
- ☐FUEL SYSTEM: 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 CALTRA
Typically appears around 50K miles. Repair cost ~$500
- ☐OTHER: 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,
Typically appears around 50K miles. Repair cost ~$500
- ☐SUSPENSION: 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
Typically appears around 50K miles. Repair cost ~$500
- ☐TRANSMISSION: 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 ##
Typically appears around 50K miles. Repair cost ~$500
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Mercedes-Benz SLK350 — Year Comparison
How does 2012 compare to other years? Fewer complaints = more reliable.
Full years-to-avoid analysis →NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 15
- Recalls
- 0
- Fire reports
- 0
- Crash reports
- 0
- Injury reports
- 1
- Segment avg
- 15
Check a Specific VIN
See recalls for YOUR 2012 Mercedes-Benz SLK350