Just to dispel some myths here.
Sale of goods act, relating specifically to cars, YOU HAVE 6 MONTHS IN LAW, doesn't matter what any dealer says, they aren't the law, the only exception is if you bought the car at a much reduced rate, ie below market value.
The 6 months in LAW warranty states simply and clearly that ANY defect was there at the time of sale and is 100% TOTALLY DOWN TO THE SELLER, where they are a garage/seller, as simple as that.
This of course excludes fair wear and tear, ie tyres wipers etc.
This applies to any age car sold by a dealer/seller fort the market value.
Your faults are not fair wear and tear.
The spring issue has been caused by the eu lowering the amount of sulphur allowed in the mix of metal, this gives far greater ductility, that's why it's seen as a new problem, ie since the change.
tabetha