Nissan 370Z vs Infiniti Q60

What's the difference?

Road testing the Nissan 370Z in 2011, I noted it was getting on. Yes, the rear-wheel drive two-seater had been given a design freshen up and a bigger engine a couple of years prior, but the 350Z it was based on had hit the local market way back in 2003. And it wasn't unreasonable to expect replacement or retirement in the not-too-distant future.

Okay, so that was seven years ago, which means if you (like many) consider the 370Z to be an update of the 350Z (the transition happening in 2009), this car has been on sale for 15 years straight. Can you imagine Apple trying to sell any one product without entirely reinventing it for that long?

You might say that makes it a modern classic; so good it's only required an occasional touch up to keep it on the Sports Car Most Wanted list. And in recent years, a consistent average of 30 Aussies a month have slotted a shiny new 370Z in their driveway.

But a less-charitable type will tell you time waits for no car, and with arch rival Toyota about to lob a Supra-shaped hand grenade over the parapet, this enduring campaigner is under the pump.

So, Nissan's reached into its bag of tricks and given the 370Z yet another cosmetic tszuj-up and added a high-performance clutch to the manual version.

Is it enough to keep Nissan's eternal Z-car flame burning?

One day Nissan's luxury sub-brand Infiniti could grow up to be as popular as Toyota's Lexus, but it'll take more than just time and brand awareness to get there – it will have to build outstanding cars that impress us, as well.

When I drove the top-of-the-range Q60 Red Sport at its launch a few months ago I called it the breakthrough car for Infiniti. Now we're testing the entry point into the line-up – the GT, which likes to imagine itself as keeping the BMW 420i and Mercedes-Benz C200 Coupe awake at night, but really rivals the Lexus RC 200t.

So, is the Q60 GT outstanding or should you ignore it and go straight to the Red Sport with its bigger engine and Sport + driving mode if you want to be impressed? And what is it like to live with when you've taken your race face off and need to pick up the toddler from day care, then do a load of shopping on the way home?

We found out pretty quickly when we lived with the Q60 GT for a week.