FWIW, my first 3 cars were Jettas. The first was a '90 coupe with TONS of problems. But I have an affinity for Jettas, so I bought a '96 GL. That car lasted me a good 4 years with only a couple of small repairs (ignition coil, etc). I put somewhere between 60-70,000 miles on it.
When I graduated college, I splurged and bought an '07 brand new. I wasn't planning on buying new, but the Mark IVs were riddled with problems. So, I took the advice of some of the guys on
www.dub-tech.com and bought new. I HIGHLY recommend you set up an account over there. The guy who started it is Walt -- he's a VW/Audi mechanic and created the forum to help out other enthusiasts. There wasn't a question he couldn't answer.
I had my '07 for around 2 years and put about 25,000 on it. It was in the shop once for a recall, but that was it, and the dealer set me up with a rental (which was a POS Dodge Avenger). I was religious with the maintenance, but I couldn't help but feel like I was being raped each time I went in -- way too much money for an oil change.
I stopped changing my own oil when I got that car because (I heard) it had a different kind of filter that required special tools. Maybe somebody else can chime in on that. Since I didn't have my garage and only had basic tools at the time, I just let the dealer do it for me.
I decided to get rid of it 2 years ago because my wife's Toyota Camry was about dead. Her car was paid off, and we couldn't afford another car payment on top of the Jetta, so we traded both of them in and got a really good deal on matching Hyundai Sante Fe's. Otherwise, I'd still be driving it.
Congrats on your purchase! That 2.0T engine is a beast!