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: 27,685 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 is advertised with 27,685 miles, approximately 19,700 below the typical mileage for its age. Priced at £22,595, it is advertised £644 above the AskCar estimate of £21,951. The AskCar estimate draws on 835 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 10 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sandown Group Mercedes-Benz of Poole, based in Poole. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £644 (2%) over the AskCar estimate of £21,951.

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 835 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 10 November 2026.

A 2021 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £21,000: the median of the 53 for sale on AskCar, as of 10 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 10 days.

Price history

AskCar first saw this advert on 31 October 2026 at £22,595. 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 10 November 2026: valid until 21 September 2027.

It has had 3 MOTs. The latest, on 14 September 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge; nearside front tyre slightly damaged/cracking or perishing; and 1 more.

Mileage at that test: 25,873 miles, which matches the advertised 27,685 miles.

Advertised mileage is about 19,700 miles lower than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

27 other 2021 Mercedes-Benz GLB AMG Line 1.3 petrol automatic SUVs are for sale at UK dealers, from £15,795 to £22,000, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white. Mileage: 29,244 miles. Price: £21,106, £1,489 less than this car. Dealer: Vindis Group Three10 Automotive in St Ives. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-dfba3c11444b
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, silver. Mileage: 29,302 miles. Price: £20,990, £1,605 less than this car. Dealer: Motor 4 U in Flimwell. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a0e884189239
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 29,550 miles. Price: £20,990, £1,605 less than this car. Dealer: Motor Gurus in Sheffield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-76fdcaf62d3b

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, silver, 67 miles from this car. Mileage: 34,750 miles. Price: £21,999, £596 less than this car. Dealer: Team Virtus in Pulborough. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-2bb79b58b21e