2021 Mercedes-Benz B Class 1.3 AMG Line

Overview

• Make: Mercedes-Benz
• Model: B Class
• Trim: AMG Line
• Version: 1.3 AMG Line Auto FWD Euro 6 5dr
• Year: 2021
• Mileage: 20,380 miles
• Fuel: Petrol
• Body: MPV, 5 doors, 5 seats
• Engine: 1.3 litres
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: Silver
• CO2: 140 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 20,380 miles, this 2021 Mercedes-Benz B Class AMG Line has covered about 15,700 fewer miles than other 2021 Mercedes-Benz B Class cars. Its asking price of £19,582 is £1,393 above the AskCar estimate of £18,189. The AskCar estimate draws on 763 Mercedes-Benz B Class adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 39 days ago. Its asking price has since fallen by £7. The latest recorded MOT expiry date is 6 September 2026, which has passed. Confirm its status with the dealer. Its advertised mileage matches the government's MOT record. The seller is D.g. Weaver, based in Pontyclun. 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: £1,393 (7%) over the AskCar estimate of £18,189.

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 39 days.

Price history

AskCar first saw this advert on 29 September 2026 at £19,589. Its asking price is now £19,582, £7 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 29 September 2026: £19,589
• 6 November 2026: £19,582

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 6 September 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 3 September 2025, passed.

Advisories at the latest test: nearside front windscreen damaged but not adversely affecting driver's view chip in screen.

Mileage at that test: 19,232 miles, which matches the advertised 20,380 miles.

Advertised mileage is about 15,700 miles lower than the median mileage of a 2021 Mercedes-Benz B Class on AskCar.

Similar cars

1 other 2021 Mercedes-Benz B Class AMG Line 1.3 petrol automatic MPV is for sale at UK dealers, as of 7 November 2026.

The closest to this car in mileage:

• 2021 Mercedes-Benz B Class AMG Line, 1.3 petrol MPV, black. Mileage: 39,579 miles. Price: £16,995, £2,587 less than this car. Dealer: Specialist Vehicles in Plymouth. AskCar page: https://askcar.co.uk/car/mercedes-benz-b-class-2021-ff1e0eda557b