2021 BMW X3 3.0 30d MHT M Sport

Overview

• Make: BMW
• Model: X3
• Trim: M Sport
• Version: 3.0 30d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (282 bhp)
• Year: 2021
• Mileage: 78,763 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 78,763 miles, this 2021 BMW X3 M Sport has covered about 29,900 more miles than other 2021 BMW X3 cars. The dealer is asking £21,973, which is £1,987 below the AskCar estimate of £23,960. To work out the AskCar estimate, we analyse UK dealer adverts for 3,034 BMW X3 cars across different ages and specifications. We first recorded this advert 160 days ago, and its asking price has since fallen by £3,073. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Carsa Bolton, based in Bolton. 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

Good value: £1,987 (8%) under the AskCar estimate of £23,960.

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 3,034 priced BMW X3 adverts across different ages and specifications, as of 4 November 2026.

A 2021 BMW X3 with the 3.0 diesel engine is typically advertised at £32,800: the median of the 41 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 BMW X3 has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £25,046. Its asking price is now £21,973, £3,073 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 28 May 2026: £25,046
• 29 May 2026: £25,369
• 1 June 2026: £25,203
• 4 June 2026: £25,118
• 7 June 2026: £25,029
• 8 June 2026: £25,031
• 9 July 2026: £24,038
• 11 July 2026: £23,881
• 14 July 2026: £23,848
• 17 July 2026: £23,436
• 20 July 2026: £23,212
• 24 July 2026: £22,965
• 26 July 2026: £22,987
• 3 August 2026: £23,025
• 5 August 2026: £23,021
• 7 August 2026: £23,003
• 12 August 2026: £22,920
• 15 August 2026: £22,899
• 18 August 2026: £22,996
• 21 August 2026: £22,939
• 30 August 2026: £23,034
• 2 September 2026: £23,070
• 5 September 2026: £23,021
• 14 September 2026: £22,891
• 16 September 2026: £22,788
• 29 September 2026: £22,784
• 1 October 2026: £22,710
• 5 October 2026: £22,683
• 8 October 2026: £22,682
• 10 October 2026: £22,590
• 11 October 2026: £22,580
• 12 October 2026: £22,557
• 14 October 2026: £22,380
• 16 October 2026: £22,461
• 18 October 2026: £22,532
• 19 October 2026: £22,503
• 21 October 2026: £22,378
• 23 October 2026: £22,278
• 24 October 2026: £22,283
• 26 October 2026: £22,290
• 27 October 2026: £22,284
• 28 October 2026: £22,260
• 31 October 2026: £22,099
• 1 November 2026: £21,992
• 2 November 2026: £21,981
• 3 November 2026: £21,973

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 28 May 2027.

It has had 5 MOTs. The latest, on 29 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 78,764 miles, which matches the advertised 78,763 miles.

Advertised mileage is about 29,900 miles higher than the median mileage of a 2021 BMW X3 on AskCar.

Similar cars

13 other 2021 BMW X3 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £20,450 to £35,900, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X3 M Sport, 3.0 diesel SUV, white. Mileage: 82,200 miles. Price: £25,500, £3,527 more than this car. Dealer: GS Car Centre in Preston. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-2b5c5c41b007
• 2021 BMW X3 M Sport, 3.0 diesel SUV, silver. Mileage: 72,988 miles. Price: £26,495, £4,522 more than this car. Dealer: Josh Houghton Motor Company in Wigan. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-885b8c3834b2
• 2021 BMW X3 M Sport, 3.0 diesel SUV, black. Mileage: 92,899 miles. Price: £20,450, £1,523 less than this car. Dealer: Group 1 Assured Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-49c06ac01bb8

• The nearest: 2021 BMW X3 M Sport, 3.0 diesel SUV, white, 6 miles from this car. Mileage: 50,516 miles. Price: £26,980, £5,007 more than this car. Dealer: Phantom Motor Company in Hindley Green. AskCar page: https://askcar.co.uk/car/bmw-x3-2021-73e67fa9c0ce