2021 Mercedes-Benz GLB 2.0 AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 AMG Line Premium Auto Euro 6 5dr
• Year: 2021
• Mileage: 69,085 miles
• Fuel: Diesel
• Body: SUV, 5 doors
• Engine: 2.0 litres
• Gearbox: Automatic
• Colour: White
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line Premium is advertised with 69,085 miles, approximately 21,700 above the typical mileage for its age. The AskCar estimate for this car is £20,517. It is priced at £19,940, which is £577 below that estimate. 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 car for sale today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Evans Halshaw BYD Rotherham, based in Rotherham. 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: £577 (2%) under the AskCar estimate of £20,517.

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

AskCar first saw this 2021 Mercedes-Benz GLB advertised today. About half of 2021 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 78 of the 161 first advertised between 8 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £19,940. 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 7 November 2026: valid until 16 July 2027.

It has had 5 MOTs. The latest, on 17 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 62,923 miles, which matches the advertised 69,085 miles.

Advertised mileage is about 21,700 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, red. Mileage: 69,798 miles. Price: £19,490, £450 less than this car. Dealer: Group 1 Automotive Mercedes-Benz Of Kings Lynn in King's Lynn. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-c6ffaf631d0f
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 68,280 miles. Price: £21,200, £1,260 more than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-f069fd0d6254
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, red. Mileage: 64,540 miles. Price: £19,886, £54 less than this car. Dealer: Heritage Honda Gloucester in Gloucester. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-20589ade1fdf

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 33 miles from this car. Mileage: 50,000 miles. Price: £22,849, £2,909 more than this car. Dealer: A1 Ortos in Oldham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-1586cce7c3af