Parkers overall rating: 3.5 out of 5 3.5

Looks are average and uninspiring but as soon as you press the accelerator pedal you'll forget the bland design. The 320bhp engine allied to the seven-speed auto ‘box means you can, theoretically, complete the benchmark 0 to 62mph sprint in 6.2 seconds and go on to an electronically limited top speed of 155mph. That's not too shabby for a convertible until you compare it to a Porsche Boxster that'll get from zero to 62mph in 6.1 seconds.

Then when you consider that the Boxster S can do the benchmark sprint in 5.4 seconds you can see that the Infiniti is starting to lag behind the leaders in this sector. The great thing about the G 37’s V6 engine, though is that it has bundles of power right the way through the range and it sounds good too. It's not really a bona fide driver's car and most will opt for an auto box as a result.

If you are a real enthusiast that wants a bit of purism then you can go for a manual.

Predictably the Convertible loses some of the stiffness of the Coupe. The rear-wheel drive and the front-mounted engine gives the car a decent level of front-end grip while the steering is well-weighted. However, corner at speed and you won't get the grip levels offered by the Coupe. The chassis rattles and flexes at motorway speed which does not inspire a lot of confidence.

Rivals including the BMW Z4, Mercedes-Benz SLK and Porsche Boxster are better equipped for those drivers looking for pure enjoyment. The G 37 Convertible is a decent motorway car but it’s not suited to B-roads because it just feels too wallowy.