MERCEDES SLK (2011)
Running costs, common problems, and reliability data based on 5,660 real MOT tests in 2024.
MOT Pass Rate
85%
Total Tests (2024)
5,660
Avg Mileage
61,469 mi
Est. Annual Cost
£1,867
Is the 2011 MERCEDES SLK reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 13 years old, 85% of MERCEDES SLKs from 2011 passed their MOT first time in 2024. That's based on 5,660 tests across the UK. The average mileage at this age is 61,469 miles.
How does the 2011 MERCEDES SLK compare?
Mileage Analysis
The average 2011 MERCEDES SLK has 61,469 miles on the clock, which is below the expected 96,200 miles for a 13-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a MERCEDES SLK?
The most reliable year is the 2016 model with a 89% MOT pass rate, while the 1996 model has the lowest at 76%. The 2011 sits between the two at 85%.
How much does a 2011 MERCEDES SLK cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MERCEDES SLK by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2016 | 89% | 2,572 | 42,977 mi |
| 2015 | 87% | 11,055 | 48,710 mi |
| 2014 | 87% | 11,284 | 55,581 mi |
| 2013 | 85% | 11,106 | 62,322 mi |
| 2012 | 84% | 13,361 | 64,940 mi |
| 2011 | 85% | 5,660 | 61,469 mi |
| 2010 | 80% | 4,472 | 66,541 mi |
| 2009 | 81% | 5,347 | 71,532 mi |
| 2008 | 80% | 6,876 | 75,187 mi |
| 2007 | 79% | 7,700 | 77,695 mi |
| 2006 | 79% | 7,884 | 80,213 mi |
| 2005 | 78% | 10,305 | 82,791 mi |
| 2004 | 78% | 6,598 | 84,132 mi |
| 2003 | 78% | 3,327 | 85,438 mi |
| 2002 | 81% | 3,692 | 87,295 mi |
| 2001 | 82% | 4,005 | 90,848 mi |
| 2000 | 79% | 3,545 | 90,918 mi |
| 1999 | 79% | 4,295 | 87,626 mi |
| 1998 | 79% | 3,523 | 89,671 mi |
| 1997 | 81% | 2,190 | 90,802 mi |
| 1996 | 76% | 126 | 98,709 mi |
Checking a specific MERCEDES SLK?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2011 MERCEDES SLK
The 2011 MERCEDES SLK is a family car with a 1798cc petrol engine. 5,660 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2011, the average MOT pass rate is 77%, and this model beats that benchmark.
With an average of 61,469 miles at 13 years old, MERCEDES SLK owners tend to use this car less than the typical driver.
2011 MERCEDES SLK Fuel Costs
The 1798cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2011 MERCEDES SLK?
Total estimated annual running cost is £1,867 (£156/month), broken down as £1327 fuel, £135 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 85% pass rate. Keeping on top of servicing will help avoid surprises.
MERCEDES SLK Reliability Trend
Newer MERCEDES SLKs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2011 MERCEDES SLK
At 13 years old, the MERCEDES SLK is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2016 model has the highest pass rate at 89%. With 5,660 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2011 MERCEDES SLK
The MERCEDES SLK is actually the most reliable option among similar petrol family cars from this era. Here are comparable petrol cars with similar engines:
- VAUXHALL CORSA (2012) 76% pass rate (-9%) from 138,265 tests
- FORD FOCUS (2013) 78% pass rate (-7%) from 132,292 tests
- NISSAN QASHQAI (2013) 72% pass rate (-13%) from 84,989 tests
- MERCEDES C (2012) 79% pass rate (-6%) from 59,235 tests