I bought my car from Ebay and then it fell to bits

Then I bought a Haynes and I also read the manual that came with the car.
Both said that I need the passport, in fact they say "don't buy a pug without one" !!!
The guy I bought the car from has failed to respond to a polite request.
Just how important is it

What info does it hold

Can I live without it

Should I report him to Ebay (as a last resort, of course) I have yet to leave feedback

Should I fall on my torque wrench for not asking for it

Cheers
Graeme