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: 44,000 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

This 2021 BMW 3 Series M Sport has covered 44,000 miles. The dealer is asking £18,495, which is £1,198 below the AskCar estimate of £19,693. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 100 days ago. Its asking price has since fallen by £1,000. The last MOT shows 44,771 miles, more than the advert. This is worth checking with the dealer. The latest recorded MOT expires on 4 August 2027. It is for sale at Car Quay in Derby. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,198 (6%) under the AskCar estimate of £19,693.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

Time on sale

This 2021 BMW 3 Series has been on sale for at least 100 days.

Price history

AskCar first saw this advert on 28 July 2026 at £19,495. Its asking price is now £18,495, £1,000 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 6 August 2026: £19,495
• 21 October 2026: £18,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 4 August 2027.

It has had 4 MOTs. The latest, on 5 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 44,771 miles. The advert says 44,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 10,800 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.

Similar cars

146 other 2021 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £14,000 to £26,950, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 44,000 miles. Price: £19,999, £1,504 more than this car. Dealer: AB Car Sales in Gunnislake. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-be0f979fac08
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 43,000 miles. Price: £20,985, £2,490 more than this car. Dealer: Brooklands Motor Centre in Leeds. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-bbd215a52f63
• 2021 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 45,121 miles. Price: £15,495, £3,000 less than this car. Dealer: KZ Autos in Coventry. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-86b5c668ee2d

• The nearest: 2021 BMW 3 Series M Sport, 2.0 petrol saloon, blue, 5 miles from this car. Mileage: 39,637 miles. Price: £22,799, £4,304 more than this car. Dealer: Motorpoint Derby in Derby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-973459fcda58