2021 BMW 4 Series 2.0 420i M Sport
Price: £24,500. Fair price: £1,282 (5%) over the AskCar estimate of £23,218, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,814 priced BMW 4 Series adverts on AskCar as of 4 November 2026.
AskCar lists 1,865 used BMW 4 Series from 1,070 UK dealerships, as of 4 November 2026.
Overview
- Make: BMW
- Model: 4 Series
- Trim: M Sport
- Version: 2.0 420i M Sport Auto RWD Euro 6 2dr Step (181 bhp)
- Year: 2021
- Mileage: 46,500 miles
- Fuel: Petrol
- Body: 2 doors, 4 seats
- Engine: 2.0 litres, 181 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: White
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 46,500 miles on the clock, this 2021 BMW 4 Series M Sport has done roughly 2,400 more miles than a typical 2021 BMW 4 Series. Priced at £24,500, it is advertised £1,282 above the AskCar estimate of £23,218. The AskCar estimate draws on 1,814 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 1 day ago. The seller is Sytner Tamworth BMW, based in Tamworth. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 4 November 2026.
Price
Fair price: £1,282 (5%) over the AskCar estimate of £23,218.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 1,814 priced BMW 4 Series adverts across different ages and specifications, as of 4 November 2026.
A 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £24,000: the median of the 144 for sale on AskCar, as of 4 November 2026.
Time on sale
AskCar first saw this 2021 BMW 4 Series advertised 1 day ago. About 4 in 10 of 2021 BMW 4 Series cars are gone from sale within a month of being advertised: 103 of the 239 first advertised between 11 July 2026 and 1 October 2026.
Price history
AskCar first saw this advert on 3 November 2026 at £24,500. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 2,400 miles higher than the median mileage of a 2021 BMW 4 Series on AskCar.
Browse all BMW 4 Series cars for sale · 2021 BMW 4 Series price guide
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As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.