2021 Mercedes-Benz B Class 1.3 AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: B Class
• Trim: AMG Line Premium
• Version: 1.3 AMG Line Premium DCT FWD Euro 6 5dr
• Year: 2021
• Mileage: 22,226 miles
• Fuel: Petrol
• Body: MPV, 5 doors, 5 seats
• Engine: 1.3 litres
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 141 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 22,226 miles on the clock, this 2021 Mercedes-Benz B Class AMG Line Premium has done roughly 13,800 fewer miles than a typical 2021 Mercedes-Benz B Class. The AskCar estimate for this car is £17,392. It is priced at £17,999, which is £607 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 763 Mercedes-Benz B Class cars across different ages and specifications. Since we first spotted the advert 136 days ago, the asking price has dropped by £700. The recorded MOT expired on 3 September 2026, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Available Car Supermarket - Castle Donington in Castle Donnington. 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

Fair price: £607 (3%) over the AskCar estimate of £17,392.

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

A 2021 Mercedes-Benz B Class with the 1.3 petrol engine is typically advertised at £16,900: the median of the 37 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Mercedes-Benz B Class has been on sale for at least 136 days.

Price history

AskCar first saw this advert on 24 June 2026 at £18,699. Its asking price is now £17,999, £700 less. The latest price cut was seen on 25 September 2026.

Price changes recorded:

• 24 June 2026: £18,699
• 28 August 2026: £18,399
• 4 September 2026: £18,199
• 25 September 2026: £17,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: the latest record we hold ran out on 3 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 15 August 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 17,845 miles, which matches the advertised 22,226 miles.

Advertised mileage is about 13,800 miles lower than the median mileage of a 2021 Mercedes-Benz B Class on AskCar.

Similar cars

3 other 2021 Mercedes-Benz B Class AMG Line Premium 1.3 petrol automatic MPVs are for sale at UK dealers, from £15,698 to £16,750, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz B Class AMG Line Premium, 1.3 petrol MPV, red. Mileage: 24,466 miles. Price: £16,699, £1,300 less than this car. Dealer: Available Car Supermarket - Castle Donington in Castle Donington. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-b8494194383e
• 2021 Mercedes-Benz B Class AMG Line Premium, 1.3 petrol MPV, blue. Mileage: 30,000 miles. Price: £16,750, £1,249 less than this car. Dealer: Alistair Buchan in East Wemyss. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-10ae5b258ad2
• 2021 Mercedes-Benz B Class AMG Line Premium, 1.3 petrol MPV, silver. Mileage: 39,915 miles. Price: £15,698, £2,301 less than this car. Dealer: Arnold Clark Solihull Motorstore in Solihull. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-1c29285a27ee