The new gearbox is based on the ZF unit used in other BMWs, with modified ... to BMW. As standard, the Z4 M40i features a variable-ratio steering rack, upgraded brakes, an M Sport differential ...

The BMW Z4 will appeal to those looking for a comfortable ... the Porsche 718 Boxster outshines it considerably. M Sport trim brings an even more aggressive look, although you’re not getting ...

330.0-hp, 3.2-liter, Straight 6 Cylinder Engine (Gasoline Fuel) Wondering which trim is right for you? Our 2006 BMW Z4 M trim comparison will help you decide.

Within 100 yards or so of the jagged access road leading to the circuit you can see why BMW chose a route consisting mainly of smooth tarmac. The Z4 M feels very stiff. The front 225/45 ZR18 ...

330.0-hp, 3.2-liter, Straight 6 Cylinder Engine (Gasoline Fuel) Wondering which trim is right for you? Our 2007 BMW Z4 M trim comparison will help you decide.