2004 Mercedes-Benz SLK 3.5 SLK350
Price: £5,480. Above the going rate: £499 (10%) over the AskCar estimate of £4,981, our expected asking price for this car from its model, age, mileage and specification, drawing on 412 priced Mercedes-Benz SLK adverts on AskCar as of 10 November 2026.
AskCar lists 463 used Mercedes-Benz SLK from 363 UK dealerships, as of 10 November 2026.
Overview
- Make: Mercedes-Benz
- Model: SLK
- Version: 3.5 SLK350 Auto RWD Euro 3 2dr (272 bhp)
- Year: 2004
- Mileage: 72,896 miles
- Fuel: Petrol
- Body: Convertible, 2 doors, 2 seats
- Engine: 3.5 litres, 272 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Silver
- CO2: 242 g/km
- Emissions standard: Euro 3
About this car
At 72,896 miles, this 2004 Mercedes-Benz SLK has covered about 7,700 more miles than other 2004 Mercedes-Benz SLK cars. Its asking price of £5,480 is £499 above the AskCar estimate of £4,981. To work out the AskCar estimate, we analyse UK dealer adverts for 412 Mercedes-Benz SLK cars across different ages and specifications. We have tracked this advert for 115 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Highline Conversions, based in Dacorum. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 10 November 2026.
Price
Above the going rate: £499 (10%) over the AskCar estimate of £4,981.
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 412 priced Mercedes-Benz SLK adverts across different ages and specifications, as of 10 November 2026.
Time on sale
This 2004 Mercedes-Benz SLK has been on sale for at least 115 days.
Price history
AskCar first saw this advert on 18 July 2026 at £5,480. 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 10 November 2026: valid until 4 May 2027.
It failed its MOT on 5 May 2026 (nearside headlamp aim too high) and passed later the same day.
There were no advisories at the latest test.
Mileage at that test: 72,904 miles, which matches the advertised 72,896 miles.
Advertised mileage is about 7,700 miles higher than the median mileage of a 2004 Mercedes-Benz SLK on AskCar.
Browse all Mercedes-Benz SLK cars for sale · 2004 Mercedes-Benz SLK price guide
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Photos
50 photos of this car are on its AskCar page.
As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.