We have a MY 2000 Y reg Fabia 1.9 TDI which has a broken rear spring and needs replacing. But in my shed I have a set of standard MY 56 VRS springs, Are these interchangeable as the springs have only travelled around 50,000 miles and would save my Son some hard earn't money. Thanks in advance.

I beleive they are but the car would sit a tad lower - IIRC the vRS springs sit about 15-20mm lower than the standard ones.