2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line Premium
Price: £23,000. Above the going rate: £1,865 (8%) over the AskCar estimate of £21,135, our expected asking price for this car from its model, age, mileage and specification, drawing on 822 priced Mercedes-Benz GLB adverts on AskCar as of 8 November 2026.
AskCar lists 853 used Mercedes-Benz GLB from 391 UK dealerships, as of 8 November 2026.
Overview
- Make: Mercedes-Benz
- Model: GLB
- Trim: AMG Line Premium
- Version: 1.3 AMG Line Premium Auto FWD Euro 6 5dr (161 bhp)
- Year: 2021
- Mileage: 46,868 miles
- Fuel: Petrol
- Body: SUV, 5 doors, 7 seats
- Engine: 1.3 litres, 161 bhp
- Gearbox: Automatic
- Drive: Front-wheel drive
- Colour: Blue
- CO2: 163 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
The advertised mileage for this 2021 Mercedes-Benz GLB AMG Line Premium is 46,868 miles. Its asking price of £23,000 is £1,865 above the AskCar estimate of £21,135. The AskCar estimate uses UK dealer asking prices, including 822 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 11 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Sytner Group Mercedes-Benz of West London in Brentford. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 8 November 2026.
Price
Above the going rate: £1,865 (8%) over the AskCar estimate of £21,135.
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 822 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 8 November 2026.
A 2021 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £21,000: the median of the 51 for sale on AskCar, as of 8 November 2026.
Time on sale
This 2021 Mercedes-Benz GLB has been on sale for at least 11 days.
Price history
AskCar first saw this advert on 28 October 2026 at £23,000. 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 8 November 2026: valid until 27 October 2027.
It has had 3 MOTs. The latest, on 9 October 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 46,531 miles, which matches the advertised 46,868 miles.
Similar cars
15 other 2021 Mercedes-Benz GLB AMG Line Premium 1.3 petrol automatic SUVs are for sale at UK dealers, from £18,480 to £23,498, as of 8 November 2026.
The 3 closest to this car in mileage:
- 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, blue. Mileage: 42,500 miles. Price: £21,995, £1,005 less than this car. Dealer: Evo Motor Group in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-ce92dd512ddb
- 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, grey. Mileage: 51,400 miles. Price: £19,995, £3,005 less than this car. Dealer: CC Cars in Dukinfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-91e74fe85a2a
- 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, grey. Mileage: 41,340 miles. Price: £23,498, £498 more than this car. Dealer: Arnold Clark Mercedes-Benz of Grangemouth in Grangemouth. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-0856e965d794
Browse all Mercedes-Benz GLB cars for sale · 2021 Mercedes-Benz GLB price guide
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As of 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.