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: 55,362 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 55,362 miles, this 2021 Mercedes-Benz GLB AMG Line has covered about 8,000 more miles than other 2021 Mercedes-Benz GLB cars. The AskCar estimate for this car is £19,763. It is priced at £18,900, which is £863 below that estimate. The AskCar estimate draws on 835 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert today. Its advertised mileage matches the government's MOT record. It is for sale at Lmc Cars in Upminster. 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: £863 (4%) under the AskCar estimate of £19,763.

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

AskCar first saw this 2021 Mercedes-Benz GLB advertised today. About half of 2021 Mercedes-Benz GLB cars are gone from sale within a month of being advertised: 78 of the 162 first advertised between 11 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £18,900. 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 10 November 2026: valid until 1 June 2027.

It has had 3 MOTs. The latest, on 2 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,382 miles, which matches the advertised 55,362 miles.

Advertised mileage is about 8,000 miles higher 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 £22,595, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 52,794 miles. Price: £18,920, 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
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 59,200 miles. Price: £18,999, £99 more than this car. Dealer: Premluxe Motors in Battlesbridge. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-cace29fdd1cd
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white. Mileage: 59,293 miles. Price: £18,186, £714 less than this car. Dealer: Quality Part X Dunstable in Dunstable. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-8c2277abc035

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey, 3 miles from this car. Mileage: 65,560 miles. Price: £18,495, £405 less than this car. Dealer: Motoroo in Basildon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-0171ad620b6e