The Q70 was previously known as the M35, with the rebranding being part of Infiniti’s badge-changing strategy.
Three engine options and four trim levels are available, with the new model already on sale in the UK.
Engine wise, the biggest seller in the UK is expected to be the 2.2-litre diesel, which has been developed in partnership with Mercedes-Benz. It produces 168bhp and 295lb ft, with CO2 emissions of 129g/km. This puts it in a higher tax banding than the more powerful Audi A6 2.0 TDI Ultra, which produces only 117g/km.
Along with the diesel there's a 3.7-litre V6 petrol producing 316bhp and 266lb ft, plus a hybrid option using an electric motor and a 3.5-litre V6, with total outputs – including the electric motor – of 359bhp and 403lb ff. Infiniti claims this will deliver a 0-62mph time of 5.3sec allied to CO2 emissions of 145g/km.
All Q70s, starting with the entry-spec Premium model, feature LED headlights and tail-lights, front and rear parking sensors, a rear-view camera, sat-nav, ventilated leather seats and 18-inch alloy wheels.
Sport models feature upgraded brakes and 20-inch alloys, plus a more aggressive front-end styling treatment.
Premuim Tech and Sport Tech trims include additional items such as adaptive cruise control, a Bose premium audio system, lane departure with blind-spot warning and a 360deg surround-view camera system.
Buyers are able to order the diesel engine in all four trims levels, while the hybrid is limited to Premium or Premium Tech models. The 3.7-litre petrol is available in Sport Tech trim only.