2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line Premium Plus

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Premium Plus
• Version: 1.3 AMG Line Premium Plus Auto FWD Euro 6 5dr (161 bhp)
• Year: 2021
• Mileage: 20,863 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: White
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line Premium Plus is advertised with 20,863 miles, approximately 26,500 below the typical mileage for its age. The AskCar estimate for this car is £24,980. It is priced at £24,698, which is £282 below that estimate. The AskCar estimate uses UK dealer asking prices, including 841 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 29 days ago. Its asking price has since fallen by £300. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Arnold Clark Chertsey Motorstore / Geely, based in Chertsey. 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

Fair price: £282 (1%) under the AskCar estimate of £24,980.

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 29 days.

Price history

AskCar first saw this advert on 9 October 2026 at £24,998. Its asking price is now £24,698, £300 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 9 October 2026: £24,998
• 7 November 2026: £24,698

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 6 October 2027.

It has had 5 MOTs. The latest, on 7 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 20,869 miles, which matches the advertised 20,863 miles.

Advertised mileage is about 26,500 miles lower than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

7 other 2021 Mercedes-Benz GLB AMG Line Premium Plus 1.3 petrol automatic SUVs are for sale at UK dealers, from £19,994 to £25,450, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, blue. Mileage: 23,000 miles. Price: £25,450, £752 more than this car. Dealer: Jamjar Cars in St Albans. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-7696975be873
• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, white. Mileage: 33,100 miles. Price: £24,490, £208 less than this car. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-3052f26bc530
• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, white. Mileage: 34,626 miles. Price: £23,499, £1,199 less than this car. Dealer: Prestige Motor Trader in Croydon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-7481582e1d18