2021 BMW X3 3.0 M40i

Overview

• Make: BMW
• Model: X3
• Version: 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
• Year: 2021
• Mileage: 78,707 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 354 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 214 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 78,707 miles, this 2021 BMW X3 has covered about 31,700 more miles than other 2021 BMW X3 cars. The dealer is asking £29,980, which is £1,374 above the AskCar estimate of £28,606. To work out the AskCar estimate, we analyse UK dealer adverts for 3,046 BMW X3 cars across different ages and specifications. Since we first spotted the advert 80 days ago, the asking price has dropped by £2,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Oakdene Collection in Alfreton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,374 (4%) over the AskCar estimate of £28,606.

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 3,046 priced BMW X3 adverts across different ages and specifications, as of 9 November 2026.

A 2021 BMW X3 with the 3.0 petrol engine is typically advertised at £31,500: the median of the 37 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2021 BMW X3 has been on sale for at least 80 days.

Price history

AskCar first saw this advert on 21 August 2026 at £31,980. Its asking price is now £29,980, £2,000 less. The latest price cut was seen on 22 October 2026.

Price changes recorded:

• 21 August 2026: £31,980
• 25 August 2026: £31,860
• 26 August 2026: £31,780
• 31 August 2026: £31,640
• 1 September 2026: £31,620
• 5 September 2026: £31,980
• 10 September 2026: £31,480
• 15 September 2026: £31,440
• 16 September 2026: £31,380
• 19 September 2026: £30,980
• 23 September 2026: £30,940
• 2 October 2026: £30,880
• 9 October 2026: £30,480
• 22 October 2026: £29,980

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 31 January 2027.

It has had 3 MOTs. The latest, on 5 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 63,189 miles, which matches the advertised 78,707 miles.

Advertised mileage is about 31,700 miles higher than the median mileage of a 2021 BMW X3 on AskCar.