2021 BMW 4 Series 2.0 420i M Sport
Price: £24,000. Fair price: £462 (1%) under the AskCar estimate of £24,462, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,810 priced BMW 4 Series adverts on AskCar as of 10 November 2026.
AskCar lists 1,855 used BMW 4 Series from 1,069 UK dealerships, as of 10 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: 35,801 miles
- Fuel: Petrol
- Body: 2 doors, 4 seats
- Engine: 2.0 litres, 181 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Black
- CO2: 146 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW 4 Series M Sport is advertised with 35,801 miles, approximately 8,300 below the typical mileage for its age. Its asking price of £24,000 is £462 below the AskCar estimate of £24,462. To work out the AskCar estimate, we analyse UK dealer adverts for 1,810 BMW 4 Series cars across different ages and specifications. This car was first seen in our listings data today. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Sytner Tring BMW in COW Roast. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 10 November 2026.
Sytner Tring BMW is rated 4.4 out of 5 on Google.
Price
Fair price: £462 (1%) under the AskCar estimate of £24,462.
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 1,810 priced BMW 4 Series adverts across different ages and specifications, as of 10 November 2026.
A 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £24,000: the median of the 143 for sale on AskCar, as of 10 November 2026.
Time on sale
AskCar first saw this 2021 BMW 4 Series advertised today. About 4 in 10 of 2021 BMW 4 Series cars are gone from sale within a month of being advertised: 114 of the 268 first advertised between 11 July 2026 and 7 October 2026.
Price history
AskCar first saw this advert on 10 November 2026 at £24,000. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 20 July 2027.
It has had 4 MOTs. The latest, on 18 July 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 32,196 miles, which matches the advertised 35,801 miles.
Advertised mileage is about 8,300 miles lower 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 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.