2021 Mercedes-Benz CLS 2.9 CLS400d AMG Line Night Edition Premium Plus

Price: £26,995. Fair price: £550 (2%) over the AskCar estimate of £26,445, our expected asking price for this car from its model, age, mileage and specification, drawing on 305 priced Mercedes-Benz CLS adverts on AskCar as of 9 November 2026.

AskCar lists 322 used Mercedes-Benz CLS from 263 UK dealerships, as of 9 November 2026.

Overview

  • Make: Mercedes-Benz
  • Model: CLS
  • Trim: AMG Line Night Edition Premium Plus
  • Version: 2.9 CLS400d AMG Line Night Edition Premium Plus G-Tronic 4WD Euro 6 (s/s) 4dr Coupe (325 bhp)
  • Year: 2021
  • Mileage: 67,982 miles
  • Fuel: Diesel
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 2.9 litres, 325 bhp
  • Gearbox: Automatic (G-Tronic)
  • Drive: Four-wheel drive
  • Colour: Black
  • CO2: 191 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

At 67,982 miles, this 2021 Mercedes-Benz CLS AMG Line Night Edition Premium Plus has covered about 20,800 more miles than other 2021 Mercedes-Benz CLS cars. The AskCar estimate for this car is £26,445. It is priced at £26,995, which is £550 above that estimate. The AskCar estimate uses UK dealer asking prices, including 305 Mercedes-Benz CLS adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 40 days ago. Its asking price has since fallen by £2,000. The latest recorded MOT expiry date is 22 September 2026, which has passed. Confirm its status with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at SZ Motor Group in Nottingham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

SZ Motor Group is rated 4.2 out of 5 on Google.

Price

Fair price: £550 (2%) over the AskCar estimate of £26,445.

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 305 priced Mercedes-Benz CLS adverts across different ages and specifications, as of 9 November 2026.

A 2021 Mercedes-Benz CLS with the 2.9 diesel engine is typically advertised at £30,200: the median of the 12 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2021 Mercedes-Benz CLS has been on sale for at least 40 days.

Price history

AskCar first saw this advert on 30 September 2026 at £28,995. Its asking price is now £26,995, £2,000 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

  • 3 October 2026: £28,995
  • 21 October 2026: £28,495
  • 24 October 2026: £27,795
  • 25 October 2026: £27,695
  • 28 October 2026: £27,995
  • 29 October 2026: £27,495
  • 30 October 2026: £26,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: the latest record we hold ran out on 22 September 2026; ask the dealer for the current MOT.

It failed its MOT on 23 September 2025 (offside front windscreen damaged but not adversely affecting driver's view; central rear seat belt buckle missing) and passed later the same day.

Advisories at the latest test: offside front windscreen damaged but not adversely affecting driver's view; front brake disc worn, but not excessively lip; rear brake disc worn, but not excessively lip; and 1 more.

Mileage at that test: 55,633 miles, which matches the advertised 67,982 miles.

Advertised mileage is about 20,800 miles higher than the median mileage of a 2021 Mercedes-Benz CLS on AskCar.

Similar cars

9 other 2021 Mercedes-Benz CLS AMG Line Night Edition Premium Plus 2.9 diesel automatic saloons are for sale at UK dealers, from £25,995 to £34,995, as of 9 November 2026.

The 3 closest to this car in mileage:

Browse all Mercedes-Benz CLS cars for sale · 2021 Mercedes-Benz CLS price guide

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Photos

107 photos of this car are on its AskCar page.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.