2021 Mercedes-Benz S Class 2.9 S350d AMG Line

Overview

• Make: Mercedes-Benz
• Model: S Class
• Trim: AMG Line
• Version: 2.9 S350d AMG Line G-Tronic+ RWD Euro 6 (s/s) 4dr (282 bhp)
• Year: 2021
• Mileage: 100,778 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.9 litres, 282 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 173 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz S Class AMG Line is advertised with 100,778 miles, approximately 58,200 above the typical mileage for its age. Its asking price of £37,995 is £6,400 above the AskCar estimate of £31,595. The AskCar estimate uses 568 UK dealer adverts for the Mercedes-Benz S Class, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 17 days ago. The government's MOT record matches its advertised mileage. It is advertised by Pavilion Motor Company in Oldham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £6,400 (20%) over the AskCar estimate of £31,595.

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 568 priced Mercedes-Benz S Class adverts across different ages and specifications, as of 7 November 2026.

A 2021 Mercedes-Benz S Class with the 2.9 diesel engine is typically advertised at £53,900: the median of the 22 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Mercedes-Benz S Class has been on sale for at least 17 days.

Price history

AskCar first saw this advert on 21 October 2026 at £37,995. 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 7 November 2026: valid until 21 December 2026.

It has had 3 MOTs. The latest, on 22 December 2025, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge; front brake disc worn, but not excessively; and 3 more.

Mileage at that test: 96,446 miles, which matches the advertised 100,778 miles.

Advertised mileage is about 58,200 miles higher than the median mileage of a 2021 Mercedes-Benz S Class on AskCar.

Similar cars

5 other 2021 Mercedes-Benz S Class AMG Line 2.9 diesel automatic saloons are for sale at UK dealers, from £39,000 to £56,890, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, grey. Mileage: 66,900 miles. Price: £49,995, £12,000 more than this car. Dealer: SA Specialist Cars SOT in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-10923083c8c1
• 2021 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 57,000 miles. Price: £39,000, £1,005 more than this car. Dealer: Car 4 Everyone in Crewe. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-b761f5549f0e
• 2021 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 51,128 miles. Price: £46,989, £8,994 more than this car. Dealer: Essex Prestige in Harlow. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-43e897bcff30