2021 Mercedes-Benz GLB 2.0 GLB220d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 GLB220d AMG Line Premium DCT 4WD Euro 6 (s/s) 5dr 8G (187 bhp)
• Year: 2021
• Mileage: 50,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (DCT)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 50,000 miles, this 2021 Mercedes-Benz GLB AMG Line Premium has covered about 2,600 more miles than other 2021 Mercedes-Benz GLB cars. The AskCar estimate for this car is £22,761. It is priced at £22,849, which is £88 above that estimate. The AskCar estimate uses 841 UK dealer adverts for the Mercedes-Benz GLB, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 69 days ago. Its asking price has since fallen by £100. The recorded MOT expired on 9 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. The seller is A1 Ortos, based in Oldham. 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: £88 (under 1%) over the AskCar estimate of £22,761.

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 69 days.

Price history

AskCar first saw this advert on 30 August 2026 at £22,949. Its asking price is now £22,849, £100 less. The latest price cut was seen on 10 October 2026.

Price changes recorded:

• 30 August 2026: £22,949
• 10 October 2026: £22,849

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

It has had 2 MOTs. The latest, on 10 September 2025, passed.

Advisories at the latest test: nearside rear child seat fitted not allowing full inspection of adult belt; rear brake pad(s) wearing thin.

Mileage at that test: 39,989 miles, which matches the advertised 50,000 miles.

Advertised mileage is about 2,600 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, white. Mileage: 50,486 miles. Price: £21,790, £1,059 less than this car. Dealer: Vantage Toyota York in York. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-d4b064e9ae77
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 53,211 miles. Price: £23,995, £1,146 more than this car. Dealer: Agnew Group Mercedes-Benz Of Portadown in Portadown. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-78e245e60875
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 55,800 miles. Price: £22,699, £150 less than this car. Dealer: Lookers Mercedes-Benz of Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-9274b08ffd64

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, grey, 33 miles from this car. Mileage: 41,405 miles. Price: £21,500, £1,349 less than this car. Dealer: Motor Village in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-74710578b958