2021 Mercedes-Benz GLB 2.0 GLB200d AMG Line Premium

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium
• Version: 2.0 GLB200d AMG Line Premium DCT FWD Euro 6 (s/s) 5dr 2) 8G (148 bhp)
• Year: 2021
• Mileage: 71,014 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 7 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 71,014 miles, this 2021 Mercedes-Benz GLB AMG Line Premium has covered about 23,600 more miles than other 2021 Mercedes-Benz GLB cars. The AskCar estimate for this car is £18,648. It is priced at £18,295, which is £353 below that estimate. The AskCar estimate uses 835 UK dealer adverts for the Mercedes-Benz GLB, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data today. Its advertised mileage matches the government's MOT record. You can find this car at Tenby Car Supermarket in Luton. 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: £353 (1%) under the AskCar estimate of £18,648.

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 2.0 diesel engine is typically advertised at £22,800: the median of the 30 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 £18,295. 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 15 October 2027.

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

There were no advisories at the latest test.

Mileage at that test: 70,564 miles, which matches the advertised 71,014 miles.

Advertised mileage is about 23,600 miles higher than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

15 other 2021 Mercedes-Benz GLB AMG Line Premium 2.0 diesel automatic SUVs are for sale at UK dealers, from £19,490 to £24,995, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, red. Mileage: 69,798 miles. Price: £19,490, £1,195 more than this car. Dealer: Group 1 Automotive Mercedes-Benz Of Kings Lynn in King's Lynn. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-c6ffaf631d0f
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, white. Mileage: 69,085 miles. Price: £19,940, £1,645 more than this car. Dealer: Evans Halshaw BYD Rotherham in Rotherham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-d962abb94c3a
• 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black. Mileage: 68,280 miles. Price: £21,200, £2,905 more than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-f069fd0d6254

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium, 2.0 diesel SUV, black, 17 miles from this car. Mileage: 41,035 miles. Price: £22,950, £4,655 more than this car. Dealer: NSA Motor Vehicles in Milton Keynes. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-11cde202d124