2021 Mercedes-Benz GLB

1.3 AMG Line Premium Auto FWD Euro 6 5dr (161 bhp)

£20,499

Fair price: within 8% of the typical £20,368 for this model, age and mileage, drawing on 876 adverts of this make and model.

Overview

Make
Mercedes-Benz
Model
GLB
Trim
AMG LINE PREMIUM
Version
1.3 AMG Line Premium Auto FWD Euro 6 5dr (161 bhp)
Mileage
53,697 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
Blue
Doors
5
Driven wheels
Front Wheel Drive
Engine badge
GLB200
Emissions standard
Euro 6

About this car

This 2021 Mercedes-Benz GLB AMG Line Premium has covered 53,697 miles, around 10,600 more than typical for its age. The dealer is asking £20,499, which is £131 above our market estimate of £20,368. To estimate its market asking price, we analyse UK dealer adverts for 876 Mercedes-Benz GLB cars across different ages and specifications. We first recorded this advert 40 days ago, and its asking price has since fallen by £478. MOT records show an expiry date of 29 July 2027, and the latest recorded mileage is consistent with the advert. The seller is Lookers Mercedes-Benz of Shrewsbury, based in Shrewsbury.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 15 September 2026, 40 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £478 from the first recorded £20,977. 5 price reductions recorded, the latest observed on 21 October 2026.

Recorded asking prices
Date observedAsking price
15 September 2026£20,977
16 September 2026£21,977
19 September 2026£22,223
29 September 2026£21,888
3 October 2026£21,588
9 October 2026£21,388
16 October 2026£20,999
21 October 2026£20,499
23 October 2026£20,499

Price and mileage comparison

Estimated market asking price: £20,368. The asking price is £131 above 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 10,600 miles higher than typical for a 2021 Mercedes-Benz GLB.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 29 July 2027. 51,845 miles at the last test.

18 other cars with the same year, trim, gearbox and fuel are for sale from £18,699 to £24,290.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£18,69971,049 miles
£18,75092,677 miles
£19,99551,400 miles
£19,99510,000 miles
£20,49560,500 miles

These cars have covered 10,000–92,677 miles, compared with 53,697 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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