2021 BMW 3 Series 3.0 M340i MHT
Price: £35,775. Fair price: £640 (1%) over the AskCar estimate of £35,135, 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
- Version: 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
- Year: 2021
- Mileage: 27,000 miles
- Fuel: Petrol, mild hybrid
- Body: Saloon, 4 doors, 5 seats
- Engine: 3.0 litres, 369 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 176 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW 3 Series is advertised with 27,000 miles, approximately 28,100 below the typical mileage for its age. Priced at £35,775, it is advertised £640 above the AskCar estimate of £35,135. 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 82 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Cottrell Motor Co in Warrington. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £640 (1%) over the AskCar estimate of £35,135.
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.
A 2021 BMW 3 Series with the 3.0 petrol engine is typically advertised at £28,300: the median of the 148 for sale on AskCar, as of 7 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 82 days.
Price history
AskCar first saw this advert on 17 August 2026 at £35,775. 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 1 March 2027.
It failed its MOT on 16 February 2026 (windscreen washer provides insufficient washer liquid) and passed later the same day.
There were no advisories at the latest test.
Mileage at that test: 26,669 miles, which matches the advertised 27,000 miles.
Advertised mileage is about 28,100 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
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Photos
68 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.