2003 Mercedes-Benz SL 5.0 SL500

Overview

• Make: Mercedes-Benz
• Model: SL
• Version: 5.0 SL500 Auto RWD 2dr (306 bhp)
• Year: 2003
• Mileage: 101,000 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 has covered 101,000 miles. Priced at £5,495, this car is advertised £3,072 below the AskCar estimate of £8,567. This is a large price difference, so check the price and vehicle details with the dealer. The AskCar estimate uses 372 UK dealer adverts for the Mercedes-Benz SL, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 86 days ago. The last MOT shows 101,560 miles, more than the advert. This is worth checking with the dealer. Our records show an MOT expiry date of 4 September 2026, which has passed. Ask the dealer for an update. The seller is Roberts Car Sales North West, based in Flintshire. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Far below the going rate: £3,072 (35%) under the AskCar estimate of £8,567. 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 372 priced Mercedes-Benz SL adverts across different ages and specifications, as of 5 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 5 November 2026.

Time on sale

This 2003 Mercedes-Benz SL has been on sale for at least 86 days.

Price history

AskCar first saw this advert on 11 August 2026 at £5,495. 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 5 November 2026: the latest record we hold ran out on 4 September 2026; ask the dealer for the current MOT.

It has had 25 MOTs. The latest, on 5 September 2025, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 101,560 miles. The advert says 101,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 36,000 miles higher than the median mileage of a 2003 Mercedes-Benz SL on AskCar.