2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 1.3 GLB200 AMG Line Premium DCT FWD Euro 6 (s/s) 5dr 2) 7G (161 bhp)
• Year: 2021
• Mileage: 59,000 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line Premium has covered 59,000 miles, around 11,600 more miles than is typical for its age. The AskCar estimate for this car is £19,845. It is priced at £21,499, which is £1,654 above that estimate. The AskCar estimate draws on 841 Mercedes-Benz GLB adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 60 days. Its advertised mileage matches the government's MOT record. It is for sale at AB Car Sales in Gunnislake. 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

Above the going rate: £1,654 (8%) over the AskCar estimate of £19,845.

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 60 days.

Price history

AskCar first saw this advert on 8 September 2026 at £21,499. 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 7 November 2026: valid until 5 December 2026.

It has had 3 MOTs. The latest, on 27 November 2025, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge abnormal wear on inner edge- advise.

Mileage at that test: 46,694 miles, which matches the advertised 59,000 miles.

Advertised mileage is about 11,600 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

16 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 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, red. Mileage: 60,418 miles. Price: £20,998, £501 less than this car. Dealer: Arnold Clark Greenock East Hamilton Street Lepas in Greenock. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-fa8f4dd361e5
• 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, grey. Mileage: 60,500 miles. Price: £19,995, £1,504 less than this car. Dealer: Amanah Prestige in Barking and Dagenham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-80e76420ebcf
• 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, grey. Mileage: 51,400 miles. Price: £19,995, £1,504 less than this car. Dealer: CC Cars in Dukinfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-91e74fe85a2a

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 1.3 petrol SUV, white, 177 miles from this car. Mileage: 10,000 miles. Price: £19,495, £2,004 less than this car. Dealer: National Car Hub in Walsall. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-c2fe1419ea12