My wife bought a Fiat Panda Cross in Dec 2014 on a PCP. By Aug 2015, the rear differential was leaking oil and needed replacing. Over the period of the three year warranty several other issues came up including the replacement of two ECUs and the reconditioning of the turbo. Now seven months after the warranty has expired and four months before the PCP is paid off, the gearbox has started to grind and shakes. The dealership now thinks the car is worth less than I have left to pay on it and tells me that I will need to pay to have the gearbox investigate or replaced if I want to hand the car back. The car has done less than 58,000 miles. Should I expect a Fiat gearbox to last for longer?