1999 Mercedes-Benz SLK 2.3 Kompressor
Price: £3,995. Far below the going rate: £2,882 (41%) under the AskCar estimate of £6,877, our expected asking price for this car from its model, age, mileage and specification, drawing on 417 priced Mercedes-Benz SLK adverts on AskCar as of 8 November 2026. Worth asking the dealer why.
AskCar lists 467 used Mercedes-Benz SLK from 364 UK dealerships, as of 8 November 2026.
Overview
- Make: Mercedes-Benz
- Model: SLK
- Trim: Kompressor
- Version: 2.3 Kompressor Auto
- Year: 1999
- Mileage: 56,680 miles
- Fuel: Petrol
- Body: Convertible
- Engine: 2.3 litres
- Gearbox: Automatic
- Colour: Blue
About this car
This 1999 Mercedes-Benz SLK Kompressor has covered 56,680 miles. Priced at £3,995, this car is advertised £2,882 below the AskCar estimate of £6,877. This is a large price difference, so check the price and vehicle details with the dealer. The AskCar estimate uses 417 UK dealer adverts for the Mercedes-Benz SLK, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 39 days ago. The latest recorded MOT expiry date is 28 September 2026, which has passed. Confirm its status with the dealer. Its advertised mileage matches the government's MOT record. You can find this car at Richard Harris Cars in Birkenhead. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 8 November 2026.
Price
Far below the going rate: £2,882 (41%) under the AskCar estimate of £6,877. Worth asking the dealer why.
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 8 November 2026.
Time on sale
This 1999 Mercedes-Benz SLK has been on sale for at least 39 days.
Price history
AskCar first saw this advert on 30 September 2026 at £3,995. 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 8 November 2026: the latest record we hold ran out on 28 September 2026; ask the dealer for the current MOT.
It has had 19 MOTs. The latest, on 3 September 2025, passed.
Advisories at the latest test: offside front wheel bearing has slight play; nearside rear direction indicator slightly discoloured; offside rear direction indicator slightly discoloured.
Mileage at that test: 51,709 miles, which matches the advertised 56,680 miles.
Similar cars
2 other 1999 Mercedes-Benz SLK Kompressor 2.3 petrol automatic convertibles are for sale at UK dealers, from £6,990 to £6,995, as of 8 November 2026.
The 2 closest to this car in mileage:
- 1999 Mercedes-Benz SLK Kompressor, 2.3 petrol convertible, silver. Mileage: 39,143 miles. Price: £6,995, £3,000 more than this car. Dealer: Autocars in Willerby and Anlaby. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-1999-bbd2732fd89c
- 1999 Mercedes-Benz SLK Kompressor, 2.3 petrol convertible, red. Mileage: 34,399 miles. Price: £6,990, £2,995 more than this car. Dealer: HMC in Chesham. AskCar page: https://askcar.co.uk/car/mercedes-benz-slk-1999-a834112d2b68
Browse all Mercedes-Benz SLK cars for sale · 1999 Mercedes-Benz SLK price guide
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Photos
37 photos of this car are on its AskCar page.
As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.