2021 BMW 4 Series 2.0 420i M Sport
Price: £24,500. Fair price: £1,049 (4%) over the AskCar estimate of £23,451, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,816 priced BMW 4 Series adverts on AskCar as of 8 November 2026.
AskCar lists 1,873 used BMW 4 Series from 1,080 UK dealerships, as of 8 November 2026.
Overview
- Make: BMW
- Model: 4 Series
- Trim: M Sport
- Version: 2.0 420i M Sport [Tech Pack] Auto RWD Euro 6 2dr Step (181 bhp)
- Year: 2021
- Mileage: 43,021 miles
- Fuel: Petrol
- Body: 2 doors, 4 seats
- Engine: 2.0 litres, 181 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Green
- CO2: 146 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
The advertised mileage for this 2021 BMW 4 Series M Sport is 43,021 miles. Its asking price of £24,500 is £1,049 above the AskCar estimate of £23,451. The AskCar estimate uses 1,816 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 17 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Coventry BMW, based in Coventry. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 8 November 2026.
Price
Fair price: £1,049 (4%) over the AskCar estimate of £23,451.
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 1,816 priced BMW 4 Series adverts across different ages and specifications, as of 8 November 2026.
A 2021 BMW 4 Series with the 2.0 petrol engine is typically advertised at £24,000: the median of the 142 for sale on AskCar, as of 8 November 2026.
Time on sale
This 2021 BMW 4 Series has been on sale for at least 17 days.
Price history
AskCar first saw this advert on 22 October 2026 at £24,500. 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 8 November 2026: valid until 15 January 2027.
It has had 3 MOTs. The latest, on 2 January 2026, passed.
Advisories at the latest test: nearside front tyre slightly damaged/cracking or perishing; nearside rear tyre has a cut but not deep enough to reach the ply or cords; nearside side repeater insecure; and 2 more.
Mileage at that test: 39,180 miles, which matches the advertised 43,021 miles.
Advertised mileage is about 1,000 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 8 November 2026, AskCar lists 595,629 cars and vans from 12,891 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.