2021 Mercedes-Benz GLB 1.3 GLB200 AMG Line

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line
• Version: 1.3 GLB200 AMG Line DCT FWD Euro 6 (s/s) 5dr 7G (161 bhp)
• Year: 2021
• Mileage: 29,550 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line has covered 29,550 miles, around 17,800 fewer miles than is typical for its age. The dealer is asking £20,990, which is £1,543 below the AskCar estimate of £22,533. To work out the AskCar estimate, we analyse UK dealer adverts for 841 Mercedes-Benz GLB cars across different ages and specifications. It first appeared in our advert records 21 days ago. The recorded MOT expired on 24 November 2025, so ask the dealer whether it has been renewed. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Motor Gurus in Sheffield. 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: £1,543 (6%) under the AskCar estimate of £22,533.

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 21 days.

Price history

AskCar first saw this advert on 17 October 2026 at £20,990. 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: the latest record we hold ran out on 24 November 2025; ask the dealer for the current MOT.

It has had one MOT, on 25 November 2024, and passed.

There were no advisories at the latest test.

Mileage at that test: 23,571 miles, which matches the advertised 29,550 miles.

Advertised mileage is about 17,800 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: 29,302 miles. Price: £20,990, the same price as this car. Dealer: Motor 4 U in Flimwell. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a0e884189239
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white. Mileage: 29,244 miles. Price: £21,217, £227 more than this car. Dealer: Vindis Group Three10 Automotive in St Ives. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-dfba3c11444b
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 30,623 miles. Price: £22,000, £1,010 more than this car. Dealer: ESP Cars in Long Eaton. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-4b800fa52a07