2020 BMW 3 Series 3.0 M340i Sport
Price: £33,495. Above the going rate: £3,716 (12%) over the AskCar estimate of £29,779, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,906 priced BMW 3 Series adverts on AskCar as of 12 November 2026.
AskCar lists 7,172 used BMW 3 Series from 2,715 UK dealerships, as of 12 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Trim: Sport
- Version: 3.0 M340i Sport Auto 4WD Euro 6 5dr (368 bhp)
- Year: 2020
- Mileage: 48,000 miles
- Fuel: Petrol
- Body: Estate, 5 doors, 5 seats
- Engine: 3.0 litres, 368 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 191 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2020 BMW 3 Series Sport is advertised with 48,000 miles, approximately 10,400 below the typical mileage for its age. Priced at £33,495, it is advertised £3,716 above the AskCar estimate of £29,779. The AskCar estimate uses UK dealer asking prices, including 6,906 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records today. Its advertised mileage matches the government's MOT record. It is for sale at Gibbons Automotive in Westbury. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 12 November 2026.
Gibbons Automotive is rated 4.9 out of 5 on Google.
Price
Above the going rate: £3,716 (12%) over the AskCar estimate of £29,779.
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 6,906 priced BMW 3 Series adverts across different ages and specifications, as of 12 November 2026.
A 2020 BMW 3 Series with the 3.0 petrol engine is typically advertised at £27,900: the median of the 63 for sale on AskCar, as of 12 November 2026.
Time on sale
AskCar first saw this 2020 BMW 3 Series advertised today. About half of 2020 BMW 3 Series cars are gone from sale within a month of being advertised: 367 of the 778 first advertised between 12 July 2026 and 9 October 2026.
Price history
AskCar first saw this advert on 12 November 2026 at £33,495. 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 12 November 2026: valid until 5 August 2027.
It has had 5 MOTs. The latest, on 6 August 2026, passed.
Advisories at the latest test: rear brake pad(s) wearing thin.
Mileage at that test: 46,382 miles, which matches the advertised 48,000 miles.
Advertised mileage is about 10,400 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.
Similar cars
1 other 2020 BMW 3 Series Sport 3.0 petrol automatic estate is for sale at UK dealers, as of 12 November 2026.
The closest to this car in mileage:
- 2020 BMW 3 Series Sport, 3.0 petrol estate, grey. Mileage: 45,012 miles. Price: £36,000, £2,505 more than this car. Dealer: Sytner Tring BMW in Tring. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-214c84b489aa
Browse all BMW 3 Series cars for sale · 2020 BMW 3 Series price guide
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Photos
57 photos of this car are on its AskCar page.
As of 12 November 2026, AskCar lists 596,362 cars and vans from 12,840 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.