2020 Mercedes-Benz SL prices
There are 2 used 2020 Mercedes-Benz SL cars for sale from UK dealers on AskCar, as of 10 November 2026. The cheapest is £39,995.
AskCar lists 462 used Mercedes-Benz SL across the UK, from 341 dealerships.
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.
2020 Mercedes-Benz SL cars for sale now
This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. All 2 cars listed here meet these rules.
The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 371 priced Mercedes-Benz SL adverts on AskCar as of 10 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2020 Mercedes-Benz SL.
Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.
Best value 2020 Mercedes-Benz SL: priced furthest below the AskCar estimate
Their asking prices run from £39,995 to £43,950.
- 2020 Mercedes-Benz SL 4.7 SL500 Grand Edition, 448 bhp, automatic, petrol, convertible, 2 doors, 2 seats, black. Mileage: 42,038 miles. Price: £39,995, unchanged since AskCar first saw it on 10 November 2026. Good value: £5,230 (11%) under the AskCar estimate of £45,225. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 13 August 2027. Dealer: Applecross Motor Company in Broxburn. AskCar page: https://askcar.co.uk/car/mercedes-benz-sl-2020-1eec72c463bc
- 2020 Mercedes-Benz SL 3.0 SL400 V6 Grand Edition Premium, 362 bhp, automatic, petrol, convertible, 2 doors, 2 seats, blue. Mileage: 24,254 miles. Price: £43,950, unchanged since AskCar first saw it on 3 November 2026, 7 days ago. Fair price: £269 (under 1%) over the AskCar estimate of £43,681. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 10 August 2027. Dealer: Sytner Group Mercedes-Benz of West London in London. AskCar page: https://askcar.co.uk/car/mercedes-benz-sl-2020-b5b31e93d0e4
Cheapest 2020 Mercedes-Benz SL: the lowest asking prices
These 2 are priced £39,995 to £43,950. They have covered 24,254 to 42,038 miles.
- 2020 Mercedes-Benz SL 4.7 SL500 Grand Edition: £39,995, 42,038 miles. Listed in full under best value.
- 2020 Mercedes-Benz SL 3.0 SL400 V6 Grand Edition Premium: £43,950, 24,254 miles. Listed in full under best value.
Lowest-mileage 2020 Mercedes-Benz SL
These 2 have covered 24,254 to 42,038 miles. Their asking prices run from £39,995 to £43,950.
- 2020 Mercedes-Benz SL 3.0 SL400 V6 Grand Edition Premium: £43,950, 24,254 miles. Listed in full under best value.
- 2020 Mercedes-Benz SL 4.7 SL500 Grand Edition: £39,995, 42,038 miles. Listed in full under best value.
Newly advertised 2020 Mercedes-Benz SL: first seen by AskCar in the 7 days to 10 November 2026
This car is the most recently advertised.
- 2020 Mercedes-Benz SL 4.7 SL500 Grand Edition: £39,995, 42,038 miles. Listed in full under best value.
Mercedes-Benz SL prices by year
Mercedes-Benz SL by trim
- Mercedes-Benz SL AMG (67 cars)
- Mercedes-Benz SL AMG Sport (43 cars)
- Mercedes-Benz SL AMG Line (28 cars)
Mercedes-Benz SL by price
- Under £8,000 (40 cars)
- Under £10,000 (79 cars)
- Under £15,000 (137 cars)
- Under £20,000 (220 cars)
- Under £30,000 (305 cars)
Mercedes-Benz SL near you
- In England (429 cars)
- In Scotland (10 cars)
- In Wales (15 cars)
- In Northern Ireland (6 cars)
- Near Hillingdon (68 cars)
- Near Richmond upon Thames (65 cars)
- Near Great Bookham and Fetcham (64 cars)
- Near Egham (62 cars)
- Near Barnet (59 cars)
- Near London (56 cars)
- Near Sutton (55 cars)
- Near Watford (51 cars)
- Near Redhill (50 cars)
- Near Guildford (47 cars)
- Near Farnborough (44 cars)
- Near Bolton (43 cars)
- Near Havering (42 cars)
- Near Wigan (42 cars)
- Near Bracknell (42 cars)
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