2021 BMW 4 Series
2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)
£31,000
Above the going rate: £4,072 over the typical £26,928 for this model, age and mileage, drawing on 1,756 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
- 22,500 miles
- Year
- 2021
- Fuel type
- Petrol
- Body type
- Convertible
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 181 bhp
- Seats
- 4
- CO2
- 160 g/km
- Colour
- Blue
- Doors
- 2
- Driven wheels
- Rear Wheel Drive
- Engine badge
- 420i
- Emissions standard
- Euro 6
About this car
At 22,500 miles, this 2021 BMW 4 Series M Sport has covered about 19,400 fewer miles than other 2021 BMW 4 Series cars. The dealer is asking £31,000, which is £4,072 above our market estimate of £26,928. We use UK dealer asking prices, including 1,756 BMW 4 Series listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 120 days ago. The recorded MOT expired on 18 August 2026, so ask the dealer whether it has been renewed. Our comparison with the latest MOT reading has not flagged a mileage discrepancy. You can find this car at Zenith Motor Company in Dartford.
Stock data from 19 October 2026.
Price history
First seen on 22 June 2026, 120 days ago. Advert duration calculated on 20 October 2026.
| Date observed | Asking price |
|---|---|
| 23 June 2026 | £31,000 |
| 10 July 2026 | £31,000 |
| 19 October 2026 | £31,000 |
Price and mileage comparison
Estimated market asking price: £26,928. The asking price is £4,072 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 1,756 adverts of this make and model across different ages and specifications.
Advertised mileage is approximately 19,400 miles lower than typical for a 2021 BMW 4 Series.
The advertised mileage is consistent with the last MOT reading.
The recorded MOT has expired; ask the dealer for an up-to-date MOT.
MOT
MOT valid until 18 August 2026. 18,558 miles at the last test.
85 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 |
| £19,499 | 78,788 miles |
| £19,900 | 77,199 miles |
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
Similar cars for less
- 2022 BMW 4 Series, 22,000 miles, £23,995, £4,047 under typical, Chesham
- 2024 BMW 4 Series, 13,375 miles, £28,869, £4,853 under typical, Bromley
- 2022 BMW 4 Series, 15,314 miles, £24,499, £4,001 under typical, Southport
Dealer
Zenith Motor Company, Dartford. Across the dealer network: 33 cars for sale.
Dealer postcode: DA2 8DH.
