2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line
• Version: 1.3 GLB200 AMG Line DCT FWD Euro 6 (s/s) 5dr 7G (161 bhp)
• Year: 2021
• Mileage: 80,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Red
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 80,000 miles on the clock, this 2021 Mercedes-Benz GLB AMG Line has done roughly 32,600 more miles than a typical 2021 Mercedes-Benz GLB. Its asking price of £17,900 is £939 above the AskCar estimate of £16,961. The AskCar estimate uses 841 UK dealer adverts for the Mercedes-Benz GLB, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 13 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Mylson in Manchester. 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: £939 (5%) over the AskCar estimate of £16,961.

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 1.3 petrol engine is typically advertised at £21,000: the median of the 52 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 13 days.

Price history

AskCar first saw this advert on 25 October 2026 at £17,900. 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 October 2027.

It has had 4 MOTs. The latest, on 5 October 2026, passed.

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

Mileage at that test: 80,204 miles, which matches the advertised 80,000 miles.

Advertised mileage is about 32,600 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

25 other 2021 Mercedes-Benz GLB AMG Line 1.3 petrol automatic SUVs are for sale at UK dealers, from £15,795 to £22,595, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white. Mileage: 87,258 miles. Price: £16,800, £1,100 less than this car. Dealer: Evans Halshaw Renault Durham in Durham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a71dbc81f46a
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, red. Mileage: 70,487 miles. Price: £18,495, £595 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, blue. Mileage: 90,000 miles. Price: £16,995, £905 less than this car. Dealer: Rix Motors in Warrington. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-f31d8a05af77