2021 BMW 4 Series
2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)
£20,650
Fair price: within 8% of the typical £20,268 for this model, age and mileage, drawing on 1,722 adverts of this make and model.
Overview
- Make
- BMW
- Model
- 4 Series
- Trim
- M SPORT
- Version
- 2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)
- Mileage
- 69,441 miles
- Year
- 2021
- Fuel type
- Petrol
- Body type
- Coupe
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 181 bhp
- Seats
- 4
- CO2
- 151 g/km
- Colour
- Green
- Doors
- 2
- Driven wheels
- Rear Wheel Drive
- Engine badge
- 420i
- Emissions standard
- Euro 6
About this car
This 2021 BMW 4 Series M Sport has covered 69,441 miles, around 27,100 more than typical for its age. Our estimated market asking price is £20,268. This car is advertised at £20,650, which is £382 above that figure. The estimate uses 1,722 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 2 days ago. MOT records show an expiry date of 28 November 2026, and the latest recorded mileage is consistent with the advert. The seller is Car Planet Barnet, based in New Southgate.
Stock data from 26 October 2026.
Price history
First seen on 25 October 2026, 2 days ago. Advert duration calculated on 27 October 2026.
| Date observed | Asking price |
|---|---|
| 25 October 2026 | £20,650 |
| 26 October 2026 | £20,650 |
Price and mileage comparison
Estimated market asking price: £20,268. The asking price is £382 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 1,722 adverts of this make and model across different ages and specifications.
Advertised mileage is approximately 27,100 miles higher than typical for a 2021 BMW 4 Series.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT valid until 28 November 2026. 61,116 miles at the last test.
79 other cars with the same year, trim, gearbox and fuel are for sale from £16,995 to £41,000.
| Asking price | Mileage |
|---|---|
| £16,995 | 96,000 miles |
| £17,490 | 56,431 miles |
| £18,990 | 97,313 miles |
| £19,900 | 77,199 miles |
| £20,950 | 70,584 miles |
These cars have covered 12,064–97,313 miles, compared with 69,441 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 BMW 4 Series cars for sale · 2021 BMW 4 Series price guide
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