2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 1.3 AMG Line Premium Auto FWD Euro 6 5dr (161 bhp)
• Year: 2021
• Mileage: 38,116 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 38,116 miles on the clock, this 2021 Mercedes-Benz GLB AMG Line Premium has done roughly 8,500 fewer miles than a typical 2021 Mercedes-Benz GLB. The dealer is asking £22,399, which is £418 above the AskCar estimate of £21,981. To work out the AskCar estimate, we analyse UK dealer adverts for 863 Mercedes-Benz GLB cars across different ages and specifications. We first recorded this advert 28 days ago, and its asking price has since fallen by £1,000. The government's MOT record matches its advertised mileage. You can find this car at cinch in Bolton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £418 (1%) over the AskCar estimate of £21,981.

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 863 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 6 November 2026.

A 2021 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £21,000: the median of the 53 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 28 days.

Price history

AskCar first saw this advert on 9 October 2026 at £23,399. Its asking price is now £22,399, £1,000 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 9 October 2026: £23,399
• 16 October 2026: £22,899
• 6 November 2026: £22,399

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 21 May 2027.

It has had 2 MOTs. The latest, on 22 May 2026, passed.

Advisories at the latest test: rear brake pad(s) wearing thin.

Mileage at that test: 33,806 miles, which matches the advertised 38,116 miles.

Advertised mileage is about 8,500 miles lower than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

17 other 2021 Mercedes-Benz GLB AMG Line Premium 1.3 petrol automatic SUVs are for sale at UK dealers, from £18,480 to £23,498, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, red. Mileage: 38,019 miles. Price: £19,495, £2,904 less than this car. Dealer: Swansway Garages Swansway Honda Stockport in Stockport. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-5d647c1bf23a
• 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, red. Mileage: 40,846 miles. Price: £21,426, £973 less than this car. Dealer: Vertu Ford Redditch in Redditch. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-1a15c08b57dd
• 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, grey. Mileage: 41,340 miles. Price: £23,498, £1,099 more than this car. Dealer: Arnold Clark Mercedes-Benz of Grangemouth in Grangemouth. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-0856e965d794

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, grey, 16 miles from this car. Mileage: 51,400 miles. Price: £19,995, £2,404 less than this car. Dealer: CC Cars in Dukinfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-91e74fe85a2a