2021 BMW 4 Series

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

£22,498

Fair price: within 8% of the typical £24,403 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
36,929 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
Black
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

At 36,929 miles, this 2021 BMW 4 Series M Sport has covered about 3,700 fewer miles than other 2021 BMW 4 Series cars. The dealer is asking £22,498, which is £1,905 below our market estimate of £24,403. Our estimate draws on 1,758 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. The asking price is now £500 lower than when we first recorded the advert 35 days ago. MOT records show an expiry date of 19 June 2027, and the latest recorded mileage is consistent with the advert. The seller is Arnold Clark Wallsend Silverlink Citroen / Peugeot / Jeep / OMODA / JAECOO, based in Wallsend.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 18 September 2026, 35 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £500 from the first recorded £22,998. 3 price reductions recorded, the latest observed on 21 October 2026.

Recorded asking prices
Date observedAsking price
18 September 2026£22,998
22 September 2026£23,998
27 September 2026£23,498
6 October 2026£23,998
9 October 2026£22,998
21 October 2026£22,498
22 October 2026£22,498

Price and mileage comparison

Estimated market asking price: £24,403. The asking price is £1,905 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 3,700 miles lower than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 19 June 2027. 35,141 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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