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: 70,487 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

This 2021 Mercedes-Benz GLB AMG Line has covered 70,487 miles, around 23,100 more miles than is typical for its age. The AskCar estimate for this car is £18,077. It is priced at £18,495, which is £418 above that estimate. The AskCar estimate uses UK dealer asking prices, including 841 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 143 days ago, the asking price has dropped by £1,500. We checked its advertised mileage against the government's MOT record, and they match. The seller is Just Audi VW, based in Lincoln. 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: £418 (2%) over the AskCar estimate of £18,077.

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 143 days.

Price history

AskCar first saw this advert on 17 June 2026 at £19,995. Its asking price is now £18,495, £1,500 less. The latest price cut was seen on 24 September 2026.

Price changes recorded:

• 17 June 2026: £19,995
• 28 July 2026: £19,495
• 2 September 2026: £18,995
• 24 September 2026: £18,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 24 November 2026.

It has had 2 MOTs. The latest, on 4 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 62,908 miles, which matches the advertised 70,487 miles.

Advertised mileage is about 23,100 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, red. Mileage: 68,465 miles. Price: £17,891, £604 less than this car. Dealer: Stratstone Mercedes-Benz of Glasgow in Glasgow. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-19594d37d2c8
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 65,560 miles. Price: £18,495, the same price as this car. Dealer: Motoroo in Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-0171ad620b6e
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, black. Mileage: 62,621 miles. Price: £18,110, £385 less than this car. Dealer: Big Motoring World Enfield in Enfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-d5e073fadbeb

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey, 38 miles from this car. Mileage: 29,550 miles. Price: £20,990, £2,495 more than this car. Dealer: Motor Gurus in Sheffield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-76fdcaf62d3b