2021 BMW 4 Series

2.0 420i M Sport [Tech/Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)

£24,250

Fair price: within 8% of the typical £24,498 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 [Tech/Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)
Mileage
46,150 miles
Year
2021
Fuel type
Petrol
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
152 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 46,150 miles, around 4,200 more than typical for its age. The dealer is asking £24,250, which is £248 below our market estimate of £24,498. To estimate its market asking price, we analyse UK dealer adverts for 1,749 BMW 4 Series cars across different ages and specifications. Since we first spotted the advert 41 days ago, the asking price has dropped by £750. Its MOT is recorded as valid until 18 July 2027. The advertised mileage is consistent with the latest MOT reading. You can find this car at Sytner Sunningdale BMW in Ascot.

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: £750 from the first recorded £25,000. 2 price reductions recorded, the latest observed on 15 October 2026.

Recorded asking prices
Date observedAsking price
11 September 2026£25,000
1 October 2026£24,500
15 October 2026£24,250
21 October 2026£24,250

Price and mileage comparison

Estimated market asking price: £24,498. The asking price is £248 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 4,200 miles higher than typical for a 2021 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 18 July 2027. 44,864 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