2015 Mercedes-Benz SLK 2.1 SLK250 CDI
Price: £10,962. Fair price: £755 (7%) over the AskCar estimate of £10,207, our expected asking price for this car from its model, age, mileage and specification, drawing on 407 priced Mercedes-Benz SLK adverts on AskCar as of 9 November 2026.
AskCar lists 459 used Mercedes-Benz SLK from 358 UK dealerships, as of 9 November 2026.
Overview
- Make: Mercedes-Benz
- Model: SLK
- Version: 2.1 SLK250 CDI G-Tronic+ RWD Euro 5 (s/s) 2dr (201 bhp)
- Year: 2015
- Mileage: 42,000 miles
- Fuel: Diesel
- Body: Convertible, 2 doors, 2 seats
- Engine: 2.1 litres, 201 bhp
- Gearbox: Automatic (G-Tronic+)
- Drive: Rear-wheel drive
- Colour: Silver
- CO2: 132 g/km
- Emissions standard: Euro 5
About this car
With 42,000 miles on the clock, this 2015 Mercedes-Benz SLK has done roughly 11,200 fewer miles than a typical 2015 Mercedes-Benz SLK. The AskCar estimate for this car is £10,207. It is priced at £10,962, which is £755 above that estimate. The AskCar estimate draws on 407 Mercedes-Benz SLK adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 32 days. Its advertised mileage matches the government's MOT record. You can find this car at Thorp Arch Motor Company in Wetherby. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 9 November 2026.
Price
Fair price: £755 (7%) over the AskCar estimate of £10,207.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 407 priced Mercedes-Benz SLK adverts across different ages and specifications, as of 9 November 2026.
A 2015 Mercedes-Benz SLK with the 2.1 diesel engine is typically advertised at £9,800: the median of the 36 for sale on AskCar, as of 9 November 2026.
Time on sale
This 2015 Mercedes-Benz SLK has been on sale for at least 32 days.
Price history
AskCar first saw this advert on 8 October 2026 at £10,962. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 2 March 2027.
It has had 10 MOTs. The latest, on 3 March 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 39,124 miles, which matches the advertised 42,000 miles.
Advertised mileage is about 11,200 miles lower than the median mileage of a 2015 Mercedes-Benz SLK on AskCar.
Browse all Mercedes-Benz SLK cars for sale · 2015 Mercedes-Benz SLK price guide
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Photos
92 photos of this car are on its AskCar page.
As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.