2021 BMW 4 Series

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

£20,950

Fair price: within 8% of the typical £20,586 for this model, age and mileage, drawing on 1,763 adverts of this make and model.

Overview

Make: BMW
Model: 4 Series
Trim: M SPORT
Version: 2.0 420i M Sport Auto Euro 6 2dr (181 bhp)
Mileage: 70,584 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
Engine badge: 420i
Emissions standard: Euro 6

About this car

With 70,584 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 28,600 more miles than a typical 2021 BMW 4 Series. Our estimated market asking price is £20,586. This car is advertised at £20,950, which is £364 above that figure. We use UK dealer asking prices, including 1,763 BMW 4 Series listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 113 days ago. MOT records show an expiry date of 4 July 2027, and the latest recorded mileage is consistent with the advert. It is for sale at Staffordshire Car Company in Stoke-on-Trent.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 30 June 2026, 113 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observed	Asking price
1 July 2026	£20,950
10 July 2026	£20,950
20 October 2026	£20,950

Price and mileage comparison

Estimated market asking price: £20,586. The asking price is £364 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 1,763 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 28,600 miles higher than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 4 July 2027. 69,353 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.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£16,995	96,000 miles
£17,490	56,431 miles
£18,990	97,313 miles
£19,900	77,199 miles
£20,750	86,002 miles

These cars have covered 12,064–97,313 miles, compared with 70,584 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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Dealer

Staffordshire Car Company, Stoke-on-Trent. Across the dealer network: 41 cars for sale.

Dealer postcode: ST1 4BA.