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: 48,918 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Red
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line has covered 48,918 miles. Its asking price of £19,995 is £489 below the AskCar estimate of £20,484. The AskCar estimate uses 841 UK dealer adverts for the Mercedes-Benz GLB, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 14 days ago. Its advertised mileage matches the government's MOT record. It is for sale at Georgesons Car Sales in Liverpool. 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: £489 (2%) under the AskCar estimate of £20,484.

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 14 days.

Price history

AskCar first saw this advert on 24 October 2026 at £19,995. 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 11 August 2027.

It failed its MOT on 10 August 2026 (rear brake pad(s) less than 1.5 mm thick) and passed 2 days later, on 12 August 2026.

Advisories at the latest test: under body covers fitted.

Mileage at that test: 47,936 miles, which matches the advertised 48,918 miles.

Advertised mileage is about 1,500 miles higher 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, white. Mileage: 46,841 miles. Price: £18,990, £1,005 less than this car. Dealer: Endeavour Omoda & Jaecoo Watford in Watford. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-ff9163a6be21
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, blue. Mileage: 46,465 miles. Price: £19,097, £898 less than this car. Dealer: Luks Autohaus in Leicester. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-5bf90beb8cb8
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 52,794 miles. Price: £18,990, £1,005 less than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-c3d8cffef8fa

• The nearest: 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, white, under a mile from this car. Mileage: 39,900 miles. Price: £20,495, £500 more than this car. Dealer: Georgesons Car Sales in Liverpool. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-8830c097805a