1999 Mercedes-Benz SL 3.2 SL320
Price: £22,990. Above the going rate: £7,689 (50%) over the AskCar estimate of £15,301, our expected asking price for this car from its model, age, mileage and specification, drawing on 370 priced Mercedes-Benz SL adverts on AskCar as of 9 November 2026.
AskCar lists 461 used Mercedes-Benz SL from 341 UK dealerships, as of 9 November 2026.
Overview
- Make: Mercedes-Benz
- Model: SL
- Version: 3.2 SL320 Auto RWD 2dr
- Year: 1999
- Mileage: 70,000 miles
- Fuel: Petrol
- Body: Convertible, 2 doors
- Engine: 3.2 litres
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Silver
About this car
This 1999 Mercedes-Benz SL has covered 70,000 miles. Priced at £22,990, it is advertised £7,689 above the AskCar estimate of £15,301. The AskCar estimate uses UK dealer asking prices, including 370 Mercedes-Benz SL adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 90 days. The advertised mileage is lower than the latest MOT reading of 71,554 miles. Ask the dealer to explain. Its MOT is recorded as valid until 18 December 2026. You can find this car at Karmann Classics in Guildford. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 9 November 2026.
Price
Above the going rate: £7,689 (50%) over the AskCar estimate of £15,301.
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.
Time on sale
This 1999 Mercedes-Benz SL has been on sale for at least 90 days.
Price history
AskCar first saw this advert on 11 August 2026 at £22,990. 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: valid until 18 December 2026.
It has had 24 MOTs. The latest, on 19 November 2025, passed.
Advisories at the latest test: front registration plate deteriorated but not likely to be misread.
Mileage at that test: 71,554 miles. The advert says 70,000 miles, fewer than the MOT record, so ask the dealer which is right.
Advertised mileage is about 4,000 miles lower than the median mileage of a 1999 Mercedes-Benz SL on AskCar.
Browse all Mercedes-Benz SL cars for sale · 1999 Mercedes-Benz SL price guide
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Photos
41 photos of this car are on its AskCar page.
As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.