2003 Mercedes-Benz SL 5.0 SL500

Overview

• Make: Mercedes-Benz
• Model: SL
• Version: 5.0 Auto RWD 2dr (306 bhp)
• Year: 2003
• Mileage: 99,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors
• Engine: 5.0 litres, 306 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Silver
• CO2: 304 g/km

About this car

This 2003 Mercedes-Benz SL is advertised with 99,000 miles, approximately 34,000 above the typical mileage for its age. The AskCar estimate for this car is £7,676. It is priced at £6,575, which is £1,101 below that estimate. The AskCar estimate draws on 370 Mercedes-Benz SL adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 165 days ago. Our latest MOT record expired on 14 August 2024. Check the current position with the dealer. The government's MOT record matches its advertised mileage. It is advertised by Nick King Car Sales in Gloucester. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Good value: £1,101 (14%) under the AskCar estimate of £7,676.

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 370 priced Mercedes-Benz SL adverts across different ages and specifications, as of 9 November 2026.

A 2003 Mercedes-Benz SL with the 5.0 petrol engine is typically advertised at £10,000: the median of the 15 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2003 Mercedes-Benz SL has been on sale for at least 165 days.

Price history

AskCar first saw this advert on 28 May 2026 at £6,575. 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 9 November 2026: the latest record we hold ran out on 14 August 2024; ask the dealer for the current MOT.

It has had 22 MOTs. The latest, on 11 August 2023, passed.

Advisories at the latest test: nearside front brake pipe corroded, covered in grease or other material; offside front brake pipe corroded, covered in grease or other material; nearside front tyre worn close to legal limit/worn on edge and damaged; and 3 more.

Mileage at that test: 95,931 miles, which matches the advertised 99,000 miles.

Advertised mileage is about 34,000 miles higher than the median mileage of a 2003 Mercedes-Benz SL on AskCar.