2021 BMW 4 Series

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

£24,995

Fair price: within 8% of the typical £26,227 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 2dr Step (181 bhp)
Mileage
23,110 miles
Year
2021
Fuel type
Petrol
Body type
Coupe
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
144 g/km
Colour
Blue
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

This 2021 BMW 4 Series M Sport is advertised with 23,110 miles, approximately 17,500 below the typical mileage for its age. Its asking price of £24,995 is £1,232 below our estimate of £26,227. The estimate uses 1,758 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 31 days ago. Its asking price has since fallen by £1,000. The latest MOT record shows an expiry date of 11 May 2027, with the advertised mileage consistent with the recorded reading. You can find this car at Agnew Group Bavarian BMW in Belfast.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 23 September 2026, 31 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £1,000 from the first recorded £25,995. 1 price reduction recorded, the latest observed on 30 September 2026.

Recorded asking prices
Date observedAsking price
23 September 2026£25,995
30 September 2026£24,995
22 October 2026£24,995

Price and mileage comparison

Estimated market asking price: £26,227. The asking price is £1,232 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 17,500 miles lower than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 11 May 2027. 18,543 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

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Vehicle photos

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