2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line
• Version: 1.3 AMG Line Auto FWD Euro 6 5dr (160 bhp)
• Year: 2021
• Mileage: 43,679 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 160 bhp
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: White
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line is advertised with 43,679 miles, approximately 3,000 below the typical mileage for its age. The AskCar estimate for this car is £20,423. It is priced at £20,498, which is £75 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 839 Mercedes-Benz GLB cars across different ages and specifications. It first appeared in our advert records today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Leeds Motorstore, based in Leeds. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 11 November 2026.

How we estimate prices and check cars

Price

Fair price: £75 (under 1%) over the AskCar estimate of £20,423.

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 839 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 11 November 2026.

A 2021 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £20,500: the median of the 57 for sale on AskCar, as of 11 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: 79 of the 164 first advertised between 11 July 2026 and 8 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £20,498. 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 11 November 2026: valid until 8 November 2027.

It has had 4 MOTs. The latest, on 9 November 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 43,683 miles, which matches the advertised 43,679 miles.

Advertised mileage is about 3,000 miles lower than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

31 other 2021 Mercedes-Benz GLB AMG Line 1.3 petrol automatic SUVs are for sale at UK dealers, from £15,795 to £22,795, as of 11 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, black. Mileage: 45,916 miles. Price: £19,629, £869 less than this car. Dealer: Hedin Automotive Mercedes-Benz And Smart Of Dartford in Dartford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-e544ac8ae0cd
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, blue. Mileage: 46,465 miles. Price: £19,097, £1,401 less than this car. Dealer: Luks Autohaus in Leicester. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-5bf90beb8cb8
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white. Mileage: 46,841 miles. Price: £18,990, £1,508 less than this car. Dealer: Endeavour Omoda & Jaecoo Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-ff9163a6be21

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey, 31 miles from this car. Mileage: 29,550 miles. Price: £20,990, £492 more than this car. Dealer: Motor Gurus in Sheffield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-76fdcaf62d3b