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: 46,841 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: White
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Mercedes-Benz GLB AMG Line is 46,841 miles. Its asking price of £18,990 is £1,706 below the AskCar estimate of £20,696. The AskCar estimate uses UK dealer asking prices, including 841 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 15 days ago. Its asking price has since fallen by £841. We checked its advertised mileage against the government's MOT record, and they match. The seller is Endeavour Omoda & Jaecoo Watford, based in Watford. 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

Good value: £1,706 (8%) under the AskCar estimate of £20,696.

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 15 days.

Price history

AskCar first saw this advert on 23 October 2026 at £19,831. Its asking price is now £18,990, £841 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 23 October 2026: £19,831
• 31 October 2026: £18,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 7 September 2027.

It has had 3 MOTs. The latest, on 28 August 2026, passed.

Advisories at the latest test: nearside front outer tyre has a cut but not deep enough to reach the ply or cords wall; nearside front nail in tyre; front wiper Smearing/Juddering.

Mileage at that test: 45,479 miles, which matches the advertised 46,841 miles.

Advertised mileage is about 600 miles lower 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, blue. Mileage: 46,465 miles. Price: £19,097, £107 more 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, red. Mileage: 48,918 miles. Price: £19,995, £1,005 more than this car. Dealer: Georgesons Car Sales in Liverpool. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-4177475a136e
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 52,794 miles. Price: £18,990, the same price as this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-c3d8cffef8fa

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey, 10 miles from this car. Mileage: 95,412 miles. Price: £15,990, £3,000 less than this car. Dealer: Lennox Auto in Brent. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-082e830efff0