2021 Mercedes-Benz GLB 2.0 GLB220d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 AMG Line Premium Auto 4WD Euro 6 5dr (187 bhp)
• Year: 2021
• Mileage: 64,540 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Red
• CO2: 156 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 64,540 miles, this 2021 Mercedes-Benz GLB AMG Line Premium has covered about 17,100 more miles than other 2021 Mercedes-Benz GLB cars. Its asking price of £19,886 is £1,838 below the AskCar estimate of £21,724. The AskCar estimate draws on 841 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 36 days ago, and its asking price has since fallen by £1,489. Its advertised mileage matches the government's MOT record. The seller is Heritage Honda Gloucester, based in Gloucester. 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

Good value: £1,838 (8%) under the AskCar estimate of £21,724.

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 841 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 7 November 2026.

A 2021 Mercedes-Benz GLB with the 2.0 diesel engine is typically advertised at £22,800: the median of the 27 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 36 days.

Price history

AskCar first saw this advert on 2 October 2026 at £21,375. Its asking price is now £19,886, £1,489 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 2 October 2026: £21,375
• 18 October 2026: £20,464
• 24 October 2026: £20,338
• 6 November 2026: £19,886

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 25 July 2027.

It has had 4 MOTs. The latest, on 20 July 2026, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 59,560 miles, which matches the advertised 64,540 miles.

Advertised mileage is about 17,100 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

14 other 2021 Mercedes-Benz GLB AMG Line Premium 2.0 diesel automatic SUVs are for sale at UK dealers, from £19,490 to £24,995, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, silver. Mileage: 62,500 miles. Price: £20,500, £614 more than this car. Dealer: Colin Ludwell Cars in Bristol. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-1ae87933a2f3
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 62,000 miles. Price: £22,950, £3,064 more than this car. Dealer: Auto Q in Belfast. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a153554a972b
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 68,280 miles. Price: £21,200, £1,314 more than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-f069fd0d6254