2021 Mercedes-Benz GLB
1.3 GLB200 AMG Line DCT FWD Euro 6 (s/s) 5dr 7G (161 bhp)
£20,490
Fair price: within 8% of the typical £21,067 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
- 38,250 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
- Red
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- DCT
- Engine badge
- GLB200
- Emissions standard
- Euro 6
About this car
At 38,250 miles, this 2021 Mercedes-Benz GLB AMG Line has covered about 4,900 fewer miles than other 2021 Mercedes-Benz GLB cars. Our estimated market asking price is £21,067. This car is advertised at £20,490, which is £577 below that figure. We use UK dealer asking prices, including 876 Mercedes-Benz GLB listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 50 days ago, the asking price has dropped by £650. Its recorded MOT is valid until 30 November 2026, and its advertised mileage is consistent with the latest MOT reading. It is advertised by Big Motoring World in Chelmsford.
Stock data from 23 October 2026.
Price history
First seen on 4 September 2026, 50 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £650 from the first recorded £21,140. 30 price reductions recorded, the latest observed on 23 October 2026.
| Date observed | Asking price |
|---|---|
| 4 September 2026 | £21,140 |
| 5 September 2026 | £21,120 |
| 8 September 2026 | £21,110 |
| 9 September 2026 | £21,120 |
| 11 September 2026 | £21,100 |
| 12 September 2026 | £21,090 |
| 15 September 2026 | £21,100 |
| 16 September 2026 | £21,110 |
| 17 September 2026 | £21,100 |
| 19 September 2026 | £21,090 |
| 20 September 2026 | £21,070 |
| 22 September 2026 | £21,060 |
| 23 September 2026 | £21,070 |
| 24 September 2026 | £21,060 |
| 25 September 2026 | £21,030 |
| 26 September 2026 | £21,000 |
| 27 September 2026 | £20,980 |
| 29 September 2026 | £20,930 |
| 30 September 2026 | £20,880 |
| 1 October 2026 | £20,890 |
| 3 October 2026 | £20,860 |
| 4 October 2026 | £20,840 |
| 6 October 2026 | £20,820 |
| 7 October 2026 | £20,800 |
| 8 October 2026 | £20,790 |
| 9 October 2026 | £20,750 |
| 10 October 2026 | £20,730 |
| 11 October 2026 | £20,700 |
| 13 October 2026 | £20,670 |
| 14 October 2026 | £20,640 |
| 16 October 2026 | £20,610 |
| 17 October 2026 | £20,590 |
| 18 October 2026 | £20,580 |
| 19 October 2026 | £20,530 |
| 21 October 2026 | £20,500 |
| 23 October 2026 | £20,490 |
Price and mileage comparison
Estimated market asking price: £21,067. The asking price is £577 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 4,900 miles lower than typical for a 2021 Mercedes-Benz GLB.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT valid until 30 November 2026. 28,803 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.
| Asking price | Mileage |
|---|---|
| £15,795 | 101,000 miles |
| £15,990 | 95,412 miles |
| £16,800 | 87,258 miles |
| £18,199 | 71,750 miles |
| £18,495 | 65,560 miles |
These cars have covered 19,431–101,000 miles, compared with 38,250 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
How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.
Vehicle photos
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