I assume this is a VX you have bought sight unseen, otherwise you would have had the engine running when you looked at it??

It all depends on why it hasn't been used for that period.
There is a big risk involved in firing a car up for the first time in 1.5 years, and then driving for several hours straight away.

And pulling the plugs can be a bit of a challenge on these, make sure you have the right tools.

Before you even wind it over, check the engine oil level, and look closely at the dipstick oil colour. If it looks bad, try and get fresh oil and a filter on it before you go too far.

Good luck.

PK