2021 BMW 4 Series

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

£24,870

Fair price: within 8% of the typical £25,016 for this model, age and mileage, drawing on 1,749 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
33,607 miles
Year
2021
Fuel type
Petrol
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
154 g/km
Colour
White
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

This 2021 BMW 4 Series M Sport has covered 33,607 miles, around 8,400 fewer than typical for its age. Our estimated market asking price is £25,016. This car is advertised at £24,870, which is £146 below that figure. To estimate its market asking price, we analyse UK dealer adverts for 1,749 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 41 days ago. Its asking price has since fallen by £1,404. MOT records show an expiry date of 27 November 2026, and the latest recorded mileage is consistent with the advert. The seller is Evans Halshaw Vauxhall Newport, based in Newport.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 11 September 2026, 41 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £1,404 from the first recorded £26,274. 5 price reductions recorded, the latest observed on 13 October 2026.

Recorded asking prices
Date observedAsking price
11 September 2026£26,274
12 September 2026£25,980
29 September 2026£25,920
2 October 2026£25,730
7 October 2026£25,250
13 October 2026£24,870
21 October 2026£24,870

Price and mileage comparison

Estimated market asking price: £25,016. The asking price is £146 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 1,749 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 8,400 miles lower than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 27 November 2026. 26,928 miles at the last test.

86 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
£20,75086,002 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