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 9G-Tronic RWD Euro 6 4dr (281 bhp)
• Year: 2021
• Mileage: 370 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.9 litres, 281 bhp
• Gearbox: Automatic (9G-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 has covered 370 miles. We first recorded this car for sale 104 days ago. The advert and the latest MOT give different mileages: 91,929 miles at the MOT. Check this with the dealer. Its MOT is recorded as valid until 10 May 2027. The seller is Vinny Donnelly Motors, based in Newry. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

A 2021 Mercedes-Benz S Class with the 2.9 diesel engine is typically advertised at £53,400: the median of the 21 for sale on AskCar, as of 10 November 2026.

Time on sale

This 2021 Mercedes-Benz S Class has been on sale for at least 104 days.

Price history

AskCar first saw this advert on 29 July 2026.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 10 May 2027.

It has had 9 MOTs. The latest, on 11 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 91,929 miles. The advert says 370 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 42,400 miles lower than the median mileage of a 2021 Mercedes-Benz S Class on AskCar.

The advertised mileage of 370 miles looks wrong for a 2021 car; check it with the dealer.

Similar cars

6 other 2021 Mercedes-Benz S Class AMG Line 2.9 diesel automatic saloons are for sale at UK dealers, from £37,995 to £56,890, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 22,000 miles. Dealer: MB Specialist in London. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-0e1b2985dac1
• 2021 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 44,322 miles. Dealer: Eastern Western Motor Group Mercedes-Benz of Edinburgh (Newbridge) in Edinburgh. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-907d90735f38
• 2021 Mercedes-Benz S Class AMG Line, 2.9 diesel saloon, black. Mileage: 51,128 miles. Dealer: Essex Prestige in Harlow. AskCar page: https://askcar.co.uk/car/mercedes-benz-s-class-2021-43e897bcff30