2020 Mercedes-Benz SL 3.0 SL400 V6 Grand Edition Premium

Price: £43,950. Fair price: £86 (under 1%) over the AskCar estimate of £43,864, our expected asking price for this car from its model, age, mileage and specification, drawing on 366 priced Mercedes-Benz SL adverts on AskCar as of 4 November 2026.

AskCar lists 467 used Mercedes-Benz SL from 343 UK dealerships, as of 4 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: SL
  • Trim: Grand Edition Premium
  • Version: 3.0 SL400 V6 Grand Edition Premium G-Tronic+ RWD Euro 6 (s/s) 2dr (362 bhp)
  • Year: 2020
  • Mileage: 24,254 miles
  • Fuel: Petrol
  • Body: Convertible, 2 doors, 2 seats
  • Engine: 3.0 litres, 362 bhp
  • Gearbox: Automatic (G-Tronic+)
  • Drive: Rear-wheel drive
  • Colour: Blue
  • CO2: 216 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz SL Grand Edition Premium is advertised with 24,254 miles on the clock. Priced at £43,950, it is advertised £86 above the AskCar estimate of £43,864. The AskCar estimate uses UK dealer asking prices, including 366 Mercedes-Benz SL adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 1 day. The government's MOT record matches its advertised mileage. It is for sale at Sytner Group Mercedes-Benz of West London in Brentford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £86 (under 1%) over the AskCar estimate of £43,864.

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 366 priced Mercedes-Benz SL adverts across different ages and specifications, as of 4 November 2026.

Time on sale

AskCar first saw this 2020 Mercedes-Benz SL advertised 1 day ago.

Price history

AskCar first saw this advert on 3 November 2026 at £43,950. 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 4 November 2026: valid until 10 August 2027.

It has had 4 MOTs. The latest, on 6 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,243 miles, which matches the advertised 24,254 miles.

Browse all Mercedes-Benz SL cars for sale · 2020 Mercedes-Benz SL price guide

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Photos

21 photos of this car are on its AskCar page.

As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.