2020 BMW Z4 M40i

The 2020 BMW Z4 M40i represents the top of the Z4 range, built around BMW's B58 3.0-litre turbocharged straight-six — a unit that has earned genuine respect across multiple M Performance applications. With 335 bhp and 500 lb-ft of torque driven to the rear wheels through an eight-speed automatic, 0-62mph arrives in 4.5 seconds and the car is governed to 155mph. At 24,859 miles from new, this is a lightly used example for a six-year-old sports car, and the red exterior gives it a suitably purposeful look.

The options list is well chosen rather than excessive. The Technology Package adds a head-up display and branded audio, the Shadowline Plus Pack darkens exterior chrome for a cleaner aesthetic, and the Comfort Package includes keyless entry. The wind deflector — often absent on Z4s but genuinely useful on a soft-top used in variable British conditions — is present, along with enhanced Bluetooth with wireless charging and the through-loading system for expanded boot access.

The Z4 M40i occupies a distinct position: more refined than a Boxster but with comparable straight-line performance, and considerably more accessible than a full M car. The M40i is the variant to have if the priority is pace over the base sDrive20i, and this example's mileage and spec level make it a compelling open-top proposition.