2023 Mercedes-Benz GLB 1.3 AMG Line Executive

Overview

• Make: Mercedes-Benz
• Model: GLB
• Trim: AMG Line Executive
• Version: 1.3 AMG Line Executive DCT FWD Euro 6 (s/s) 5dr 7G (161 bhp)
• Year: 2023
• Mileage: 49,765 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

At 49,765 miles, this 2023 Mercedes-Benz GLB AMG Line Executive has covered about 16,200 more miles than other 2023 Mercedes-Benz GLB cars. The dealer is asking £24,000, which is £1,534 above the AskCar estimate of £22,466. To work out the AskCar estimate, we analyse UK dealer adverts for 822 Mercedes-Benz GLB cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 57 days ago. Its advertised mileage matches the government's MOT record. The seller is Sytner Group Mercedes-Benz of Milton Keynes, based in Milton Keynes. 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

Fair price: £1,534 (6%) over the AskCar estimate of £22,466.

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 2023 Mercedes-Benz GLB with the 1.3 petrol engine is typically advertised at £24,300: the median of the 118 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2023 Mercedes-Benz GLB has been on sale for at least 57 days.

Price history

AskCar first saw this advert on 12 September 2026 at £25,000. Its asking price is now £24,000, £1,000 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 12 September 2026: £25,000
• 25 September 2026: £24,750
• 1 October 2026: £24,500
• 16 October 2026: £24,250
• 31 October 2026: £24,000

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 July 2027.

It has had one MOT, on 9 July 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 45,883 miles, which matches the advertised 49,765 miles.

Advertised mileage is about 16,200 miles higher than the median mileage of a 2023 Mercedes-Benz GLB on AskCar.

Similar cars

47 other 2023 Mercedes-Benz GLB AMG Line Executive 1.3 petrol automatic SUVs are for sale at UK dealers, from £17,500 to £27,495, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2023 Mercedes-Benz GLB AMG Line Executive, 1.3 petrol SUV, blue. Mileage: 49,347 miles. Price: £22,750, £1,250 less than this car. Dealer: Sytner Group Mercedes-Benz of Northampton in Northampton. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2023-c77fe0fc201e
• 2023 Mercedes-Benz GLB AMG Line Executive, 1.3 petrol SUV, grey. Mileage: 50,200 miles. Price: £22,790, £1,210 less than this car. Dealer: Hanar Cars (UK) in Hoddesdon. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2023-606121823579
• 2023 Mercedes-Benz GLB AMG Line Executive, 1.3 petrol SUV, grey. Mileage: 50,701 miles. Price: £22,449, £1,551 less than this car. Dealer: Lookers Mercedes-Benz of Wolverhampton in Wolverhampton. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2023-fd9109a86b35

• The nearest: 2023 Mercedes-Benz GLB AMG Line Executive, 1.3 petrol SUV, black, under a mile from this car. Mileage: 20,134 miles. Price: £26,250, £2,250 more than this car. Dealer: Sytner Group Mercedes-Benz of Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/mercedes-benz-glb-2023-faef99df14fb