BMW Z4 review

The two four-cylinder Z4s are both rated at 47.1mpg with 138g/km CO2. Best get the 30i of the pair then, as it gets to 62mph in 5.4sec. The M40i's time is 4.6. Its fuel consumption isn't great, mind, at 38.7mpg and 165g/km. It'd be fine if you could actually manage that yourself, but this is the old unreachable NECD figure.

None of these engines are available with manual transmission. Probably only about three people would want it, and two of them work for Top Gear.

Standard kit is pretty generous, with connected nav and heated M Sport seats bundled in on all versions, and, like it or not, the virtual instruments too. So's the 10.25-inch central screen. Greedily, you're asked to pay £170 extra for the wind deflector.

Standard cabin equipment and options, by the way, are pretty much the same for all engines, though the M40i gets better brakes, an e-diff and so on.

Some useful safety aids including autonomous emergency braking are standard. But blind-spot warning and cross-traffic alert come bundled in the slightly over-egged assistance package.

You'll be wanting the adaptive headlights and the head-up display, which BMW does brilliantly.

The £399 servicing package covers pretty well everything up to three years or 36k miles.