Prices for the Infiniti M37 will start at 35,150 and rise to 45,000 for the V6 petrol-powered version of the car.
The 316bhp 3.7-litre BMW 5 Series rival can blast from 0-62mph in 6.2 seconds and has a limited top speed of 155mph. Average fuel consumption is 27.7mpg, while CO2 emissions of 235g/km place it in the top, 35% company car tax band.
Entry-level cars are well equipped with climate control, a seven-speed automatic gearbox, xenon headlights, electric seat adjustment, reversing camera and hard-disk drive for the stereo, although leather upholstery isn't fitted.
Leather comes with the M37 GT, which costs from 37,650 and also adds heated and ventilated seats. Sporty M37 S cars are priced from 39,650 and include four-wheel steering, sports suspension, gearshift paddles, sports seats and larger wheels.
Topping the range are Premium versions of the GT and S for 43,000 and 45,000 respectively. These get an upgraded, 16-speaker stereo, larger hard-disk drive with satellite-navigation and Forest Air a climate control system that 'recreates the gentle breezes and subtle scents of an environment known to promote alertness and relieve stress'.