2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line
• Version: 1.3 AMG Line Auto FWD Euro 6 5dr (160 bhp)
• Year: 2021
• Mileage: 33,890 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 160 bhp
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: Black
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line is advertised with 33,890 miles, approximately 13,500 below the typical mileage for its age. Priced at £21,789, it is advertised £405 above the AskCar estimate of £21,384. 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 recorded this car for sale today. Its advertised mileage matches the government's MOT record. You can find this car at Lookers Mercedes-Benz of Gatwick in Crawley. 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: £405 (1%) over the AskCar estimate of £21,384.

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

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 161 first advertised between 8 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £21,789. 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 18 October 2027.

It has had 3 MOTs. The latest, on 9 October 2026, passed.

Advisories at the latest test: front windscreen damaged but not adversely affecting driver's view; offside front tyre slightly damaged/cracking or perishing; rear tyre slightly damaged/cracking or perishing both sides.

Mileage at that test: 33,759 miles, which matches the advertised 33,890 miles.

Advertised mileage is about 13,500 miles lower than the median mileage of a 2021 Mercedes-Benz GLB on AskCar.

Similar cars

25 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 7 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, silver. Mileage: 34,750 miles. Price: £21,999, £210 more than this car. Dealer: Team Virtus in Pulborough. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-2bb79b58b21e
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 30,987 miles. Price: £21,999, £210 more than this car. Dealer: Gates Of Woodford in Woodford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-824652727522
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, blue. Mileage: 36,960 miles. Price: £20,199, £1,590 less than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-0cf243a7fa08