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 GLB200 AMG Line Premium Plus DCT FWD Euro 6 (s/s) 5dr 2) 7G (161 bhp)
• Year: 2021
• Mileage: 78,200 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: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mercedes-Benz GLB AMG Line Premium Plus is advertised with 78,200 miles, approximately 31,300 above the typical mileage for its age. The AskCar estimate for this car is £19,365. It is priced at £20,999, which is £1,634 above that estimate. The AskCar estimate uses UK dealer asking prices, including 822 Mercedes-Benz GLB adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 164 days ago. Its advertised mileage matches the government's MOT record. It is advertised by Sapphire Motors in Mill Hill. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £1,634 (8%) over the AskCar estimate of £19,365.

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 822 priced Mercedes-Benz GLB adverts across different ages and specifications, as of 8 November 2026.

A 2021 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £21,000: the median of the 51 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 Mercedes-Benz GLB has been on sale for at least 164 days.

Price history

AskCar first saw this advert on 28 May 2026 at £20,999. 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 8 November 2026: valid until 11 March 2027.

It has had 5 MOTs. The latest, on 2 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 78,196 miles, which matches the advertised 78,200 miles.

Advertised mileage is about 31,300 miles higher 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 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, white. Mileage: 74,500 miles. Price: £19,994, £1,005 less than this car. Dealer: BVG Automotive in Oldham. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-715a22f9f7b6
• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, black. Mileage: 49,368 miles. Price: £24,275, £3,276 more than this car. Dealer: JMV Cars Ltd of Shorne in Gravesend. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-4e052276f7ac
• 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, white. Mileage: 43,100 miles. Price: £22,990, £1,991 more than this car. Dealer: Lkc Motors in Worksop. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-a16fa2adbed2

• The nearest: 2021 Mercedes-Benz GLB AMG Line Premium Plus, 1.3 petrol SUV, blue, 7 miles from this car. Mileage: 23,000 miles. Price: £25,450, £4,451 more than this car. Dealer: Jamjar Cars in St Albans. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2021-7696975be873