2021 Mercedes-Benz GLB

1.3 GLB200 AMG Line DCT FWD Euro 6 (s/s) 5dr 7G (161 bhp)

£19,940

Fair price: within 8% of the typical £20,782 for this model, age and mileage, drawing on 876 adverts of this make and model.

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)
Mileage
41,054 miles
Year
2021
Fuel type
Petrol
Body type
SUV
Engine
1.3 L
Gearbox
Automatic
Power
161 bhp
Seats
7
CO2
163 g/km
Colour
Grey
Doors
5
Driven wheels
Front Wheel Drive
Gearbox version
DCT
Engine badge
GLB200
Emissions standard
Euro 6

About this car

With 41,054 miles on the clock, this 2021 Mercedes-Benz GLB AMG Line has done roughly 2,000 fewer miles than a typical 2021 Mercedes-Benz GLB. Its asking price of £19,940 is £842 below our estimate of £20,782. The estimate uses 876 UK dealer adverts for the Mercedes-Benz GLB, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 46 days ago, and its asking price has since fallen by £870. MOT records show an expiry date of 8 September 2027, and the latest recorded mileage is consistent with the advert. The seller is Big Motoring World Norwich, based in Norwich.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 10 September 2026, 46 days ago. Advert duration calculated on 26 October 2026. Net asking-price reduction: £870 from the first recorded £20,810. 8 price reductions recorded, the latest observed on 13 October 2026.

Recorded asking prices
Date observedAsking price
10 September 2026£20,810
11 September 2026£21,220
12 September 2026£20,780
15 September 2026£21,210
19 September 2026£21,080
23 September 2026£21,040
29 September 2026£20,720
30 September 2026£20,670
1 October 2026£20,690
6 October 2026£20,450
7 October 2026£20,440
13 October 2026£19,940
23 October 2026£19,940

Price and mileage comparison

Estimated market asking price: £20,782. The asking price is £842 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 876 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 2,000 miles lower than typical for a 2021 Mercedes-Benz GLB.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 8 September 2027. 40,751 miles at the last test.

27 other cars with the same year, trim, gearbox and fuel are for sale from £15,795 to £23,000.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£15,795101,000 miles
£15,99095,412 miles
£16,80087,258 miles
£18,19971,750 miles
£18,49565,560 miles

These cars have covered 19,431–101,000 miles, compared with 41,054 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Mercedes-Benz GLB cars for sale · 2021 Mercedes-Benz GLB price guide

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