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: 74,283 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 160 bhp
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: Black
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line has covered 74,283 miles, around 28,100 more miles than is typical for its age. The dealer is asking £17,998, which is £1,021 above the AskCar estimate of £16,977. To work out the AskCar estimate, we analyse UK dealer adverts for 848 Mercedes-Benz GLB cars across different ages and specifications. It first appeared in our advert records 1 day ago. The government's MOT record matches its advertised mileage. It is advertised by Arnold Clark Newcastle BYD in Newcastle Upon Tyne. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,021 (6%) over the AskCar estimate of £16,977.

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 848 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 12 November 2026.

A 2021 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £20,500: the median of the 55 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2021 Mercedes-Benz GLB advertised 1 day ago. About half of 2021 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 78 of the 166 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £17,998. 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 12 November 2026: valid until 8 September 2027.

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

Advisories at the latest test: nearside rear tyre slightly damaged/cracking or perishing; offside rear tyre slightly damaged/cracking or perishing.

Mileage at that test: 74,074 miles, which matches the advertised 74,283 miles.

Advertised mileage is about 28,100 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

30 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 12 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, red. Mileage: 70,487 miles. Price: £18,495, £497 more than this car. Dealer: Just Audi VW in Lincoln. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-df6fe025c63e
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, red. Mileage: 80,000 miles. Price: £17,900, £98 less than this car. Dealer: Mylson in Manchester. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-e3b3f83b859f
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 65,560 miles. Price: £18,495, £497 more than this car. Dealer: Motoroo in Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-0171ad620b6e

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white, 13 miles from this car. Mileage: 87,258 miles. Price: £16,750, £1,248 less than this car. Dealer: Evans Halshaw Renault Durham in Durham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a71dbc81f46a