2021 Mercedes-Benz B Class 1.3 AMG Line Premium Plus

Overview

• Make: Mercedes-Benz
• Model: B Class
• Trim: AMG Line Premium Plus
• Version: 1.3 AMG Line Premium Plus DCT FWD Euro 6 5dr
• Year: 2021
• Mileage: 14,925 miles
• Fuel: Petrol
• Body: MPV, 5 doors, 5 seats
• Engine: 1.3 litres
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz B Class AMG Line Premium Plus has covered 14,925 miles, around 16,400 fewer miles than is typical for its age. Priced at £21,000, it is advertised £1,555 above the AskCar estimate of £19,445. The AskCar estimate uses UK dealer asking prices, including 766 Mercedes-Benz B Class adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 22 days ago. Its advertised mileage matches the government's MOT record. The seller is Sytner Group Mercedes-Benz of Cheltenham & Gloucester, based in Staverton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,555 (8%) over the AskCar estimate of £19,445.

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 766 priced Mercedes-Benz B Class adverts across different ages and specifications, as of 5 November 2026.

A 2021 Mercedes-Benz B Class with the 1.3 petrol engine is typically advertised at £16,900: the median of the 36 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 Mercedes-Benz B Class has been on sale for at least 22 days.

Price history

AskCar first saw this advert on 14 October 2026 at £21,000. 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 5 November 2026: valid until 20 April 2027.

It has had 4 MOTs. The latest, on 16 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 13,925 miles, which matches the advertised 14,925 miles.

Advertised mileage is about 16,400 miles lower than the median mileage of a 2021 Mercedes-Benz B Class on AskCar.

Similar cars

4 other 2021 Mercedes-Benz B Class AMG Line Premium Plus 1.3 petrol automatic MPVs are for sale at UK dealers, from £16,828 to £18,500, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz B Class AMG Line Premium Plus, 1.3 petrol MPV, white. Mileage: 14,352 miles. Price: £18,499, £2,501 less than this car. Dealer: Available Car Supermarket - Sutton-In-Ashfield in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-31fd3763b45b
• 2021 Mercedes-Benz B Class AMG Line Premium Plus, 1.3 petrol MPV, white. Mileage: 16,861 miles. Price: £17,990, £3,010 less than this car. Dealer: Riverside Volvo Doncaster in Doncaster. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-3cc58aeb64c3
• 2021 Mercedes-Benz B Class AMG Line Premium Plus, 1.3 petrol MPV, white. Mileage: 28,893 miles. Price: £18,500, £2,500 less than this car. Dealer: Sytner Group Mercedes-Benz of Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-7109b4442833