2021 BMW 4 Series

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

£19,900

Fair price: within 8% of the typical £18,728 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
77,199 miles
Year
2021
Fuel type
Petrol
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
146 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 77,199 miles, around 36,500 more than typical for its age. At £19,900, it is advertised £1,172 above our estimated market asking price of £18,728. To estimate its market asking price, we analyse UK dealer adverts for 1,758 BMW 4 Series cars across different ages and specifications. We first saw this car advertised 10 days ago. Its asking price has since fallen by £300. MOT records show an expiry date of 24 July 2027, and the latest recorded mileage is consistent with the advert. The seller is Sytner Select Swindon, based in Swindon.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 14 October 2026, 10 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £300 from the first recorded £20,200. 1 price reduction recorded, the latest observed on 15 October 2026.

Recorded asking prices
Date observedAsking price
14 October 2026£20,200
15 October 2026£19,900
22 October 2026£19,900

Price and mileage comparison

Estimated market asking price: £18,728. The asking price is £1,172 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 1,758 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 36,500 miles higher than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 24 July 2027. 74,465 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
£20,95070,584 miles
£20,99049,551 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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