2021 BMW 4 Series

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

£23,490

Fair price: within 8% of the typical £24,030 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 (s/s) 2dr (181 bhp)
Mileage
42,300 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
Blue
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 42,300 miles. The dealer is asking £23,490, which is £540 below our market estimate of £24,030. To estimate its market asking price, we analyse UK dealer adverts for 1,758 BMW 4 Series cars across different ages and specifications. We have tracked this advert for 13 days. MOT records show an expiry date of 3 July 2027, and the latest recorded mileage is consistent with the advert. It is advertised by S James Prestige in Stamford.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 10 October 2026, 13 days ago. Advert duration calculated on 23 October 2026.

Recorded asking prices
Date observedAsking price
10 October 2026£23,490
22 October 2026£23,490

Price and mileage comparison

Estimated market asking price: £24,030. The asking price is £540 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 1,600 miles higher than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 3 July 2027. 39,726 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