2015 Mercedes-Benz SLK 2.1 SLK250 CDI AMG Sport

Overview

• Make: Mercedes-Benz
• Model: SLK
• Trim: AMG Sport
• Version: 2.1 SLK250 CDI AMG Sport G-Tronic+ RWD Euro 5 (s/s) 2dr (201 bhp)
• Year: 2015
• Mileage: 66,036 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.1 litres, 201 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 132 g/km
• Emissions standard: Euro 5

About this car

This 2015 Mercedes-Benz SLK AMG Sport is advertised with 66,036 miles, approximately 11,000 above the typical mileage for its age. The dealer is asking £8,449, which is £412 below the AskCar estimate of £8,861. To work out the AskCar estimate, we analyse UK dealer adverts for 417 Mercedes-Benz SLK cars across different ages and specifications. We first saw this car advertised 152 days ago. Its asking price has since fallen by £550. The government's MOT record matches its advertised mileage. You can find this car at Noya Motor Group in Peterborough. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £412 (4%) under the AskCar estimate of £8,861.

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 417 priced Mercedes-Benz SLK adverts across different ages and specifications, as of 7 November 2026.

A 2015 Mercedes-Benz SLK with the 2.1 diesel engine is typically advertised at £9,600: the median of the 38 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2015 Mercedes-Benz SLK has been on sale for at least 152 days.

Price history

AskCar first saw this advert on 8 June 2026 at £8,999. Its asking price is now £8,449, £550 less. The latest price cut was seen on 25 September 2026.

Price changes recorded:

• 8 June 2026: £8,999
• 28 June 2026: £8,749
• 20 July 2026: £8,699
• 21 August 2026: £8,649
• 14 September 2026: £8,499
• 25 September 2026: £8,449

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 28 January 2027.

It has had 9 MOTs. The latest, on 24 January 2026, passed.

Advisories at the latest test: central front oil leak, but not excessive.

Mileage at that test: 65,585 miles, which matches the advertised 66,036 miles.

Advertised mileage is about 11,000 miles higher than the median mileage of a 2015 Mercedes-Benz SLK on AskCar.

Similar cars

30 other 2015 Mercedes-Benz SLK AMG Sport 2.1 diesel automatic convertibles are for sale at UK dealers, from £5,894 to £12,995, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2015 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, black. Mileage: 64,469 miles. Price: £9,999, £1,550 more than this car. Dealer: Motorland 2008 in Walsall. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2015-c9b36204aee7
• 2015 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, black. Mileage: 68,200 miles. Price: £8,950, £501 more than this car. Dealer: Troon Cars in Leicester. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2015-4cbf3e0e5682
• 2015 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, white. Mileage: 68,248 miles. Price: £8,500, £51 more than this car. Dealer: IMV Motors in Birmingham. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2015-0b6fbb80cfe7

• The nearest: 2015 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, white, 2 miles from this car. Mileage: 56,000 miles. Price: £10,940, £2,491 more than this car. Dealer: Cambridgeshire Carsales in Peterborough. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2015-76b0c2ba1fee