2003 Mercedes-Benz SL 3.7 SL350

Price: £12,995. Above the going rate: £1,390 (11%) over the AskCar estimate of £11,605, our expected asking price for this car from its model, age, mileage and specification, drawing on 371 priced Mercedes-Benz SL adverts on AskCar as of 7 November 2026.

AskCar lists 467 used Mercedes-Benz SL from 341 UK dealerships, as of 7 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: SL
  • Version: 3.7 Auto RWD 2dr (245 bhp)
  • Year: 2003
  • Mileage: 29,000 miles
  • Fuel: Petrol
  • Body: Convertible, 2 doors
  • Engine: 3.7 litres, 245 bhp
  • Gearbox: Automatic
  • Drive: Rear-wheel drive
  • Colour: Silver
  • CO2: 281 g/km

About this car

This 2003 Mercedes-Benz SL has covered 29,000 miles. The AskCar estimate for this car is £11,605. It is priced at £12,995, which is £1,390 above that estimate. The AskCar estimate uses UK dealer asking prices, including 371 Mercedes-Benz SL adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 43 days. The advertised mileage is lower than the latest MOT reading of 31,541 miles. Ask the dealer to explain. Its recorded MOT is valid until 25 May 2027. You can find this car at Fender - Broad Classic Cars in Holt (Wiltshire). 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

Above the going rate: £1,390 (11%) over the AskCar estimate of £11,605.

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

Time on sale

This 2003 Mercedes-Benz SL has been on sale for at least 43 days.

Price history

AskCar first saw this advert on 25 September 2026 at £12,995. 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 7 November 2026: valid until 25 May 2027.

It has had 26 MOTs. The latest, on 15 May 2026, passed.

Advisories at the latest test: rear brake disc worn, pitted or scored, but not seriously weakened pair.

Mileage at that test: 31,541 miles. The advert says 29,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 35,200 miles lower than the median mileage of a 2003 Mercedes-Benz SL on AskCar.

Browse all Mercedes-Benz SL cars for sale · 2003 Mercedes-Benz SL price guide

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Photos

19 photos of this car are on its AskCar page.

As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.