2021 BMW 3 Series 2.0 318i M Sport
Price: £20,490. Fair price: £850 (4%) over the AskCar estimate of £19,640, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,886 priced BMW 3 Series adverts on AskCar as of 7 November 2026.
AskCar lists 7,202 used BMW 3 Series from 2,724 UK dealerships, as of 7 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Trim: M Sport
- Version: 2.0 318i M Sport Auto RWD Euro 6 (s/s) 4dr (154 bhp)
- Year: 2021
- Mileage: 42,772 miles
- Fuel: Petrol
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 154 bhp
- Gearbox: Automatic
- Drive: Rear-wheel drive
- Colour: Blue
- CO2: 146 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW 3 Series M Sport is advertised with 42,772 miles, approximately 12,400 below the typical mileage for its age. The AskCar estimate for this car is £19,640. It is priced at £20,490, which is £850 above that estimate. The AskCar estimate uses 6,886 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 36 days ago. Its advertised mileage matches the government's MOT record. The seller is Lloyd Colne BMW, based in Colne. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £850 (4%) over the AskCar estimate of £19,640.
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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 7 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 36 days.
Price history
AskCar first saw this advert on 2 October 2026 at £20,490. 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 7 November 2026: valid until 29 December 2026.
It has had 2 MOTs. The latest, on 18 December 2025, passed.
There were no advisories at the latest test.
Mileage at that test: 31,928 miles, which matches the advertised 42,772 miles.
Advertised mileage is about 12,400 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.
Similar cars
142 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £13,750 to £25,975, as of 7 November 2026.
The 3 closest to this car in mileage:
- 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 42,772 miles. Price: £20,490, the same price as this car. Dealer: Lloyd Colne BMW in Colne. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-29e51ca83ee4
- 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 42,851 miles. Price: £22,995, £2,505 more than this car. Dealer: MINI UK at Barretts Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-a863156335d9
- 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 42,558 miles. Price: £20,450, the same price as this car. Dealer: Norwich Van Centre in Norwich. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bef621b969da
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
More like this
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- Used BMW 3 Series for sale near Burnley
Photos
50 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.