When it goes on sale in the autumn, the Euro-market BMW 3 Series rival will be offered with a 170 hp/400 Nm 2.2 litre four-cylinder turbodiesel sourced from Mercedes, and a hybrid 3.5 litre petrol V6 with a combined output of 364 hp.
The Infiniti Q50 diesel gets to 100 km/h from rest in under nine seconds and tops out at about 230 km/h, whilst being capable of returning a quoted 4.4 litres per 100 km and emitting less than 115 grams of CO2 per km. Transmission choices are a six-speed manual or seven-speed auto.
But it’s the hybrid that’s the scorcher here, doing the century sprint in under 5.5 seconds and then ploughing on towards a 250 km/h top speed. Fuel consumption is rated at 6.2 litres per 100 km; CO2 emissions at under 145 grams per km. This is only available with the seven-speed auto; if you wish, AWD can be specified.