2021 BMW Z4 3.0 M40i

Overview

• Make: BMW
• Model: Z4
• Version: 3.0 M40i sDrive Auto RWD Euro 6 (s/s) 2dr (335 bhp)
• Year: 2021
• Mileage: 44,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 181 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW Z4 is advertised with 44,000 miles, approximately 13,800 above the typical mileage for its age. The dealer is asking £30,500, which is £360 below the AskCar estimate of £30,860. To work out the AskCar estimate, we analyse UK dealer adverts for 520 BMW Z4 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 77 days, and its asking price is down £1,250. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Flat Out Cars in Cranleigh. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £360 (1%) under the AskCar estimate of £30,860.

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 520 priced BMW Z4 adverts across different ages and specifications, as of 7 November 2026.

Time on sale

The dealer may accept less. This 2021 BMW Z4 has been on sale for at least 77 days, and its asking price has been cut by £1,250. About half of 2021 BMW Z4 cars are gone from sale within a month of being advertised: 30 of the 59 first advertised between 12 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 22 August 2026 at £31,750. Its asking price is now £30,500, £1,250 less. The latest price cut was seen on 17 October 2026.

Price changes recorded:

• 22 August 2026: £31,750
• 11 September 2026: £31,500
• 27 September 2026: £31,000
• 17 October 2026: £30,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 25 May 2027.

It failed its MOT on 12 May 2026 (nearside rear tyre has ply or cords exposed) and passed 1 day later, on 13 May 2026.

There were no advisories at the latest test.

Mileage at that test: 42,942 miles, which matches the advertised 44,000 miles.

Advertised mileage is about 13,800 miles higher than the median mileage of a 2021 BMW Z4 on AskCar.