2021 BMW X3 3.0

Overview

• Make: BMW
• Model: X3
• Version: 3.0 M40i Auto 4WD Euro 6 5dr (354 bhp)
• Year: 2021
• Mileage: 49,762 miles
• Fuel: Petrol
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 354 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 214 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X3 is advertised with 49,762 miles on the clock. Its asking price of £36,995 is £2,484 above the AskCar estimate of £34,511. The AskCar estimate uses 3,034 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. Its advertised mileage matches the government's MOT record. The seller is Group 1 Reading BMW, based in Reading. 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: £2,484 (7%) over the AskCar estimate of £34,511.

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 petrol engine is typically advertised at £32,800: the median of the 41 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2021 BMW X3 advertised today. About half of 2021 BMW X3 cars are gone from sale within a month of being advertised: 142 of the 303 first advertised between 13 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £36,995. 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 4 November 2026: valid until 11 January 2027.

It failed its MOT on 8 January 2026 (windscreen damaged but not adversely affecting driver's view minor stone chip; nearside rear tyre tread depth below requirements of 1.6mm; rear inner brake pad(s) less than 1.5 mm thick) and passed 4 days later, on 12 January 2026.

Advisories at the latest test: windscreen damaged but not adversely affecting driver's view minor stone chip.

Mileage at that test: 43,200 miles, which matches the advertised 49,762 miles.

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