2021 BMW 4 Series

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

£27,295

Fair price: within 8% of the typical £26,468 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
24,899 miles
Year
2021
Fuel type
Petrol
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
160 g/km
Colour
Blue
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

At 24,899 miles, this 2021 BMW 4 Series M Sport has covered about 17,100 fewer miles than other 2021 BMW 4 Series cars. The dealer is asking £27,295, which is £827 above our market estimate of £26,468. We use UK dealer asking prices, including 1,725 BMW 4 Series listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 63 days ago, the asking price has dropped by £1,000. It may give you a starting point for a conversation about price. Its recorded MOT is valid until 16 December 2026, and its advertised mileage is consistent with the latest MOT reading. The seller is Century Cars, based in Crawley.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 22 August 2026, 63 days ago. Advert duration calculated on 24 October 2026. Net asking-price reduction: £1,000 from the first recorded £28,295. 4 price reductions recorded, the latest observed on 9 October 2026.

Recorded asking prices
Date observedAsking price
22 August 2026£28,295
27 August 2026£27,895
8 September 2026£27,695
3 October 2026£27,500
9 October 2026£27,295
23 October 2026£27,295

Price and mileage comparison

Estimated market asking price: £26,468. The asking price is £827 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 1,725 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 17,100 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. 19,812 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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