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: 46,465 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 7 seats
• Engine: 1.3 litres, 161 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 163 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line has covered 46,465 miles. The AskCar estimate for this car is £20,734. It is priced at £19,097, which is £1,637 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 841 Mercedes-Benz GLB cars across different ages and specifications. We first saw this car advertised 41 days ago. Its asking price has since fallen by £1,196. The recorded MOT expired on 19 August 2026, 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. The seller is Luks Autohaus, based in Leicester. 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: £1,637 (7%) under the AskCar estimate of £20,734.

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 41 days.

Price history

AskCar first saw this advert on 27 September 2026 at £20,293. Its asking price is now £19,097, £1,196 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 27 September 2026: £20,293
• 11 October 2026: £19,897
• 15 October 2026: £19,797
• 21 October 2026: £19,595
• 23 October 2026: £19,457
• 6 November 2026: £19,097

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 19 August 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 19 August 2025, passed.

Advisories at the latest test: rear child seat fitted not allowing full inspection of adult belt both sides; offside rear nail in tyre; front brake pad(s) wearing thin; and 3 more.

Mileage at that test: 37,357 miles, which matches the advertised 46,465 miles.

Advertised mileage is about 900 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, white. Mileage: 46,841 miles. Price: £18,990, £107 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, red. Mileage: 48,918 miles. Price: £19,995, £898 more than this car. Dealer: Georgesons Car Sales in Liverpool. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-4177475a136e
• 2021 Mercedes-Benz GLB AMG Line, 1.3 petrol SUV, grey. Mileage: 52,794 miles. Price: £18,990, £107 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, grey, 19 miles from this car. Mileage: 30,623 miles. Price: £22,000, £2,903 more than this car. Dealer: ESP Cars in Long Eaton. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-4b800fa52a07