There is a 265bhp 3.0-litre engine for the Si and 3.2 in the M. Both make what is a small and light coupe rakishly quick, but they're also flexible and civilised in the daily reality of heavy traffic.
BMW Z4 Coupe ride & handling
Even with the power full on, the Coupe's handling remains unflustered and the M has a grip-enhancing sports rear differential and even more fluid steering. But the Si in particular has a tendency to follow every contour in the road and its ride is very firm on standard run-flat tyres.
BMW Z4 Coupe refinement
This a car that demands to be driven with commitment and precision - in other words, quickly. However, the sharp-biting clutch and slick-shifting six-speed gearbox, which are wonderfully fluid at speed, are rather clunky at low speeds. Road and engine noise boom through the cabin on course roads and at motorway pace.