The 4th and 5th Year Warranty VW factory seems to have missed the dealers in some cases ,and you mention
extra warranty ,they start thinking of the other warranty available to you end of free one .
The 4&5 the year one has to be taken out before Reg of the car ,the extended original type (not Vw Ins extra type)
can be taken out before the manufacturers expires .
It's a No brainer to take out 4 or 5 year option day one ,even if you keep the car 2 or three years , sell it and
make a big point of the cover ,even ask more ,private or dealer ,as it costs less to the next owner should a
problem crop up .