2021 BMW 4 Series

2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)

£24,340

Fair price: within 8% of the typical £24,846 for this model, age and mileage, drawing on 1,758 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
36,301 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
White
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

At 36,301 miles, this 2021 BMW 4 Series M Sport has covered about 4,400 fewer miles than other 2021 BMW 4 Series cars. The dealer is asking £24,340, which is £506 below our market estimate of £24,846. To estimate its market asking price, we analyse UK dealer adverts for 1,758 BMW 4 Series cars across different ages and specifications. The asking price is now £615 lower than when we first recorded the advert 51 days ago. Its MOT is recorded as valid until 8 August 2027. The advertised mileage is consistent with the latest MOT reading. You can find this car at Hippo Approved in Blackburn.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 2 September 2026, 51 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £615 from the first recorded £24,955. 5 price reductions recorded, the latest observed on 16 October 2026.

Recorded asking prices
Date observedAsking price
2 September 2026£24,955
8 September 2026£23,920
25 September 2026£24,320
30 September 2026£24,300
2 October 2026£24,280
9 October 2026£24,240
14 October 2026£24,300
16 October 2026£24,280
17 October 2026£24,340
22 October 2026£24,340

Price and mileage comparison

Estimated market asking price: £24,846. The asking price is £506 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 1,758 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 4,400 miles lower than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 8 August 2027. 35,545 miles at the last test.

87 other cars with the same year, trim, gearbox and fuel are for sale from £16,995 to £41,000.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£16,99596,000 miles
£17,49056,431 miles
£18,99097,313 miles
£19,90077,199 miles
£20,95070,584 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

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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