Beware you are buying a 7-8 year old VW car, so in case of maintenance of aesthetic spares, you will have strive hard to get it; aftermarket spare are rarely available in market.
You must go with thorough inspection of car from a VW showroom mechanic. Also get the car inspected from best mechanic from your city area.
I doubt it is a AT variant, but if it is, you are gambling for 50-50 chance. Rest all feature are really good in Jetta even 7-8 years back. And the service cost will scratch your wallet to a huge.
Thinking on positive side, if the car is really genuine then you are lucky to get it.