2020 BMW 3 Series 2.0 320i M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320i M Sport Auto RWD Euro 6 (s/s) 4dr (181 bhp)
• Year: 2020
• Mileage: 24,122 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 24,122 miles, this 2020 BMW 3 Series M Sport has covered about 35,600 fewer miles than other 2020 BMW 3 Series cars. Priced at £21,438, it is advertised £1,292 below the AskCar estimate of £22,730. The AskCar estimate draws on 6,862 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 53 days ago, the asking price has dropped by £854. We checked its advertised mileage against the government's MOT record, and they match. The seller is Carbase Bristol, based in Bristol. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,292 (5%) under the AskCar estimate of £22,730.

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 6,862 priced BMW 3 Series adverts across different ages and specifications, as of 4 November 2026.

A 2020 BMW 3 Series with the 2.0 petrol engine is typically advertised at £18,500: the median of the 461 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2020 BMW 3 Series has been on sale for at least 53 days.

Price history

AskCar first saw this advert on 12 September 2026 at £22,292. Its asking price is now £21,438, £854 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 12 September 2026: £22,292
• 26 September 2026: £22,094
• 8 October 2026: £21,763
• 10 October 2026: £21,759
• 15 October 2026: £21,750
• 16 October 2026: £21,732
• 17 October 2026: £21,717
• 22 October 2026: £21,657
• 24 October 2026: £21,527
• 27 October 2026: £21,455
• 28 October 2026: £21,453
• 31 October 2026: £21,438

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 31 August 2027.

It has had 4 MOTs. The latest, on 14 August 2026, passed.

Advisories at the latest test: offside rear inner tyre slightly damaged/cracking or perishing.

Mileage at that test: 23,974 miles, which matches the advertised 24,122 miles.

Advertised mileage is about 35,600 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.

Similar cars

101 other 2020 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £12,999 to £25,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 24,199 miles. Price: £22,900, £1,462 more than this car. Dealer: Big Motoring World Enfield in Enfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-c53dce1ec6e8
• 2020 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 23,271 miles. Price: £25,995, £4,557 more than this car. Dealer: EMG Motor Group BYD Bury St Edmunds in Bury St Edmunds. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-1ded5127e08e
• 2020 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 23,000 miles. Price: £21,489, £51 more than this car. Dealer: Emaari Automotive in Croydon. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-0921ff5e02b8

• The nearest: 2020 BMW 3 Series M Sport, 2.0 petrol saloon, blue, under a mile from this car. Mileage: 65,751 miles. Price: £17,000, £4,438 less than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-5dce62aecb17