2020 Mercedes-Benz S Class 4.0 AMG Executive

Overview

• Make: Mercedes-Benz
• Model: S Class
• Trim: Executive
• Version: 4.0 S 63 L Premium Executive Auto RWD Euro 6 4dr AMG Speedshift MCT (603 bhp)
• Year: 2020
• Mileage: 113,470 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 4.0 litres, 603 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 273 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mercedes-Benz S Class Executive has covered 113,470 miles, around 35,800 more miles than is typical for its age. Priced at £38,950, it is advertised £2,692 above the AskCar estimate of £36,258. The AskCar estimate uses 570 UK dealer adverts for the Mercedes-Benz S Class, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 144 days ago. Its asking price has since fallen by £5,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Marks Tey Cars in Colchester. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,692 (7%) over the AskCar estimate of £36,258.

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 570 priced Mercedes-Benz S Class adverts across different ages and specifications, as of 8 November 2026.

Time on sale

This 2020 Mercedes-Benz S Class has been on sale for at least 144 days.

Price history

AskCar first saw this advert on 17 June 2026 at £43,950. Its asking price is now £38,950, £5,000 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 17 June 2026: £43,950
• 8 August 2026: £42,950
• 4 October 2026: £41,950
• 6 October 2026: £41,538
• 22 October 2026: £39,670
• 6 November 2026: £38,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 16 April 2027.

It failed its MOT on 25 February 2026 (engine MIL inoperative or indicates a malfunction) and passed 51 days later, on 17 April 2026.

Advisories at the latest test: offside front outer tyre worn close to legal limit/worn on edge wear on outer edge; nearside rear tyre worn close to legal limit/worn on edge on 2.5mm.

Mileage at that test: 111,927 miles, which matches the advertised 113,470 miles.

Advertised mileage is about 35,800 miles higher than the median mileage of a 2020 Mercedes-Benz S Class on AskCar.