What’s new: Infiniti continues its assault on the UK market with a fleet-friendly diesel due later this year. In the meantime, powerful petrol engines are the name of the game, like the G37 convertible driven here.

Excellent: This luxury competitor to the likes of BMW 3-series and Audi A4 is a head-turning attractive model that benefits from a lack of ubiquity found in its rivals.

Good: Satnav, which comes as standard, is superb in the UK and in mainland Europe. Never has a system been so clear and easy-to-use and, shock horror, gets you where you need to go without a hitch.

Average: The car is expensive, but standard kit is high – rear-view camera and parking sensors, satnav, 19-inch alloys, Bose 13-speaker sound system, leather seats and cruise control are all included.

Poor: Boots of convertible cars are expected to be small. But in this case the boot is more or less non-existent roof-down, making a weekend away with luggage challenging to say the least.

Verdict: Fun and good looking, but the performance on offer makes the G37 fleet-unfriendly.

Infiniti G37 Convertible GT Premium 3.7 V6 7sp auto
P11D price £41,865
Model price range £38,800-£41,865
Fuel consumption 24.8mpg
CO2 264g/km
Warranty 3yrs/60,000mls
Boot space 366 litres
Engine size/power 3696cc/318hp
Top speed/0-62mph 155mph/6.4secs
On sale Month 2009
Score 7/10