2021 BMW 4 Series

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

£26,495

Fair price: within 8% of the typical £27,164 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
18,655 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

This 2021 BMW 4 Series M Sport has covered 18,655 miles, around 23,300 fewer than typical for its age. The dealer is asking £26,495, which is £668 below our market estimate of £27,164. 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 £1,995 lower than when we first recorded the advert 52 days ago. Its recorded MOT is valid until 16 December 2026, and its advertised mileage is consistent with the latest MOT reading. It is for sale at Partridge BMW in Eastleigh.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 2 September 2026, 52 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £1,995 from the first recorded £28,490. 5 price reductions recorded, the latest observed on 7 October 2026.

Recorded asking prices
Date observedAsking price
2 September 2026£28,490
17 September 2026£28,192
19 September 2026£27,793
23 September 2026£27,494
29 September 2026£26,995
7 October 2026£26,495
23 October 2026£26,495

Price and mileage comparison

Estimated market asking price: £27,164. The asking price is £668 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 23,300 miles lower than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 16 December 2026. 17,943 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

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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