Just to update, spoke to renault customer services again who advised me that a technican was sent there (er...ok) and confirms the gearbox is faulty (thanks captain obvious we established that when you said you wouldn't pay for it), they will cover the gearbox, but on further inspection the knocking from the steering wheel is not faulty, it was plugged into a diagnostic machine and no faults found. Apparently the noise is because the car is new and needs bedding in, which goes against what I was told yesterday.
So mixed feelings at the minute, on the one hand it's great that I'd get a new gearbox, but what about the steering rack? That's not normal. And could the gearbox fault be caused due to the previous owner? I know these cars are designed to be driven hard but what about if it's down to the previous owners driving and other issues will crop up.
Opinions needed guys, what would you do? If I did accept the repair would you try and get a new clutch done too? Don't fancy my chances on getting that but it would make sense in my opinion.
I'm just paranoid if I accept the repair either way this car will be one of those cars that's always at the dealers, and if the gearbox has an inherent fault and they replace it with a refurb of what's already there then what's to say I won't just have the same issues later on.
I'm just still wondering if gearboxs have a design flaw or whether it's partly driving style that causes issues later.