2014 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: 2014
• Mileage: 82,000 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.1 litres, 201 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 132 g/km
• Emissions standard: Euro 5

About this car

This 2014 Mercedes-Benz SLK AMG Sport has covered 82,000 miles. The dealer is asking £5,990, which is £1,758 below the AskCar estimate of £7,748. To work out the AskCar estimate, we analyse UK dealer adverts for 399 Mercedes-Benz SLK cars across different ages and specifications. The asking price is now £900 lower than when we first recorded the advert 158 days ago. Ask the dealer why the advert shows fewer miles than the 82,562 recorded at the latest MOT. Its recorded MOT is valid until 15 March 2027. The seller is Aylesbury Motors, based in Aylesbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £1,758 (22%) under the AskCar estimate of £7,748.

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 399 priced Mercedes-Benz SLK adverts across different ages and specifications, as of 2 November 2026.

A 2014 Mercedes-Benz SLK with the 2.1 diesel engine is typically advertised at £8,000: the median of the 45 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2014 Mercedes-Benz SLK has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £6,890. Its asking price is now £5,990, £900 less. The latest price cut was seen on 16 October 2026.

Price changes recorded:

• 28 May 2026: £6,890
• 17 July 2026: £6,390
• 16 October 2026: £5,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 15 March 2027.

It failed its MOT on 11 March 2026 (nearside front anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt; offside front anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt; nearside rear coil spring fractured or broken; and 1 more) and passed 5 days later, on 16 March 2026.

Advisories at the latest test: offside front shock absorbers has light misting of oil; front brake disc worn, but not excessively both.

Mileage at that test: 82,562 miles. The advert says 82,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 12,600 miles higher than the median mileage of a 2014 Mercedes-Benz SLK on AskCar.

Similar cars

33 other 2014 Mercedes-Benz SLK AMG Sport 2.1 diesel automatic convertibles are for sale at UK dealers, from £4,250 to £12,490, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2014 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, silver. Mileage: 83,330 miles. Price: £7,895, £1,905 more than this car. Dealer: Crosspoint Motor Company in Coalville. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2014-1fb76403cc75
• 2014 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, black. Mileage: 83,417 miles. Price: £8,000, £2,010 more than this car. Dealer: Essex Select Cars in Great Bentley. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2014-b95209ec8aac
• 2014 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, black. Mileage: 75,000 miles. Price: £8,475, £2,485 more than this car. Dealer: Braehead Motor Company in Glasgow. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2014-c64b25e5b40e

• The nearest: 2014 Mercedes-Benz SLK AMG Sport, 2.1 diesel convertible, white, 17 miles from this car. Mileage: 93,000 miles. Price: £6,990, £1,000 more than this car. Dealer: Prestigio Cars in Bedford. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-2014-cacf7c4e0c8e