2021 BMW 3 Series 2.0 318i M Sport

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: 87,565 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 154 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 87,565 miles, this 2021 BMW 3 Series M Sport has covered about 32,400 more miles than other 2021 BMW 3 Series cars. Priced at £14,995, it is advertised £513 above the AskCar estimate of £14,482. The AskCar estimate uses 6,902 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 20 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Cardiff Trade Sales, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £513 (3%) over the AskCar estimate of £14,482.

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 6,902 priced BMW 3 Series adverts across different ages and specifications, as of 6 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 20 days.

Price history

AskCar first saw this advert on 17 October 2026 at £14,995. 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 6 November 2026: valid until 22 June 2027.

It has had 3 MOTs. The latest, on 17 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 82,452 miles, which matches the advertised 87,565 miles.

Advertised mileage is about 32,400 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

143 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £25,975, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue. Mileage: 87,021 miles. Price: £15,066, £71 more than this car. Dealer: KRK Motors in Penkridge. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-0a07effc47d6
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 87,011 miles. Price: £16,998, £2,003 more than this car. Dealer: Arnold Clark Edinburgh Seafield Motorstore / Vanstore in Edinburgh. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-85f4dcb1429a
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 88,796 miles. Price: £14,335, £660 less than this car. Dealer: Carbase Lympsham in Lympsham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-7990e9d432ea

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white, under a mile from this car. Mileage: 52,840 miles. Price: £17,991, £2,996 more than this car. Dealer: Cardiff Trade Sales in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bdb376ab0c4f