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MERCEDES SLK (2001)

Running costs, reliability data, and common problems from 4,005 real MOT tests.

Annual Cost

£2,427

£202/month

MOT Pass Rate

82%

Good

Road Tax

£430

Based on CC/year

Insurance

Grp 25-38

2295cc Petrol

Solid Option

82% pass rate, £2427/year to run. Close to the national average.

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Petrol2295cc25 years old4,005 tests91k miles avg

Annual Running Costs

Fuel (Petrol, 2295cc)

~30 mpg

£1,592
Road Tax

Based on 2295cc

£430
MOT Test
£55
Predicted Repairs
£350
Total per year£2,427
Per month£202/mo
Per week£47/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

82% MOT pass rate(Good)
0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the MERCEDES brand average of 87%.

At 25 years old, 82% of MERCEDES SLKs from 2001 passed their MOT first time in 2026. That's based on 4,005 tests across the UK. The average mileage at this age is 90,848 miles.

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How Does It Compare?

Rank among 2001 cars66th of 362(top 18%)
Rank among MERCEDES models998th of 1,408(top 71%)
vs national average+0%(82% avg)
vs 2001 cars average+9%(73% avg)
vs MERCEDES average-5%(87% avg)

Mileage Analysis

90,848

Average miles

vs

185,000

Expected for age

The average 2001 MERCEDES SLK has 90,848 miles on the clock, which is significantly below the expected 185,000 miles for a 25-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

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Best Year to Buy?

The most reliable year is the 2016 model with a 89% MOT pass rate, while the 1996 model has the lowest at 76%. The 2001 sits between the two at 82%.

MERCEDES SLK by Year

YearPass RateTestsAvg Mileage
201689%2,57242,977 mi
201587%11,05548,710 mi
201487%11,28455,581 mi
201385%11,10662,322 mi
201284%13,36164,940 mi
201185%5,66061,469 mi
201080%4,47266,541 mi
200981%5,34771,532 mi
200880%6,87675,187 mi
200779%7,70077,695 mi
200679%7,88480,213 mi
200578%10,30582,791 mi
200478%6,59884,132 mi
200378%3,32785,438 mi
200281%3,69287,295 mi
200182%4,00590,848 mi
200079%3,54590,918 mi
199979%4,29587,626 mi
199879%3,52389,671 mi
199781%2,19090,802 mi
199676%12698,709 mi

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About the 2001 MERCEDES SLK

The 2001 MERCEDES SLK is a large car with a 2295cc petrol engine. 4,005 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. It ranks in the top 18% of all 2001 cars for reliability.

With an average of 90,848 miles at 25 years old, MERCEDES SLK owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.

2001 MERCEDES SLK Fuel Costs

The 2295cc petrol engine offers a reasonable balance between performance and economy. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2001 MERCEDES SLK?

Total estimated annual running cost is £2,427 202/month), broken down as £1592 fuel, £430 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 82% 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 2001 MERCEDES SLK

At 25 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%.

Common Issues to Watch For

Based on the 2001 MERCEDES SLK's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 25 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Medium risk

With an average of 91k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2001 MERCEDES SLK stacks up against similar cars for annual running costs, insurance, and tax.

CarPass RateFuel/yrTax/yrInsuranceTotal/yr
MERCEDES SLK(2001)82%£1592£430Grp 25-38£2427
RENAULT CLIO(2003)68%£1327£135Grp 18-32£2217-£210
MERCEDES C(2003)73%£1327£135Grp 18-32£2017-£410
MAZDA MX-5(2003)75%£1327£135Grp 18-32£2017-£410
BMW 3 SERIES(1999)78%£1592£250Grp 25-38£2397-£30

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.

Related Mercedes Models

Explore other Mercedes cars or similar models in the same category.

Related Guides

In-depth articles relevant to the Mercedes Slk.

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