2021 BMW 4 Series

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

£21,260

Fair price: within 8% of the typical £22,995 for this model, age and mileage, drawing on 1,725 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
50,000 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 50,000 miles, this 2021 BMW 4 Series M Sport has covered about 8,000 more miles than other 2021 BMW 4 Series cars. Our estimated market asking price is £22,995. This car is advertised at £21,260, which is £1,735 below that figure. Our estimate draws on 1,725 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. The asking price is now £460 lower than when we first recorded the advert 108 days ago. It may give you a starting point for a conversation about price. The latest MOT record shows an expiry date of 11 February 2027, with the advertised mileage consistent with the recorded reading. It is advertised by Hippo Approved in Blackburn.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 8 July 2026, 108 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £460 from the first recorded £21,720. 14 price reductions recorded, the latest observed on 9 October 2026.

Recorded asking prices
Date observedAsking price
8 July 2026£21,720
10 July 2026£21,720
20 July 2026£22,955
22 July 2026£22,240
31 July 2026£22,000
6 August 2026£23,035
8 August 2026£23,035
10 August 2026£22,240
11 August 2026£22,240
18 August 2026£21,920
19 August 2026£21,980
22 August 2026£21,960
1 September 2026£22,160
2 September 2026£22,200
5 September 2026£22,180
9 September 2026£22,100
12 September 2026£22,120
15 September 2026£22,140
16 September 2026£22,160
17 September 2026£22,080
19 September 2026£22,040
22 September 2026£22,000
23 September 2026£21,820
24 September 2026£21,800
25 September 2026£21,780
26 September 2026£21,420
9 October 2026£21,140
14 October 2026£21,200
16 October 2026£21,220
17 October 2026£21,260
23 October 2026£21,260

Price and mileage comparison

Estimated market asking price: £22,995. The asking price is £1,735 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 1,725 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 8,000 miles higher than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 11 February 2027. 47,994 miles at the last test.

84 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

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