I’ve got an Octy! Mine’s the 1.9TDi, so a bit more power, 110bhp, but a very comfortable car, handles well, acres of space, and brilliant for steady long-distance runs. I think the 2.0TDi has a few issues, not sure about the 1.6, but that aside, go for it.
[edit] Mine’s the hatch, but that’s the only real difference. At 17, you’re getting a hell of a lot of car, and, like I said, the Octy is a very comfy car to drive. I test drove a VW Bora before I drove the Octy, it was a year newer, and £1000 more expensive, but it was horrible to drive, and just not at all comfortable. I’d driven an Audi A4 regularly at work, and sitting in the Octy was immediately familiar, right down to heater and radio controls.