So, the wife and I finally bit the bullet and bought a used 2009 base 1.8L Vibe, silver in colour, 119,000km. Private sale from two very nice older people.
A couple of things manifested themselves during the drive home that neither of us noticed during our test drive. Maybe some folks here can chime in and tell me whether it's "just ours", or if these are common complaints.
1. The rear view mirrors and side mirrors seem to vibrate a lot, compared to the mirrors in our 1st gen Vibe (we alternated driving the two Vibes on our way home, so the differences were pretty noticeable). I was checking my mirrors every now and then, and it looked like the cars in the mirror's view were experiencing an earthquake!
2. Speaking of the mirrors, I'm wondering if there's a way to replace that big rearview mirror with something smaller. I'm never going to use OnStar, and the mirror is really obstructing my view out the right side of the car when combined with that massive A pillar, no matter where I move the mirror.
3. I heard a very high-pitched whine that fades in and out, really faint, really high pitched, and very infrequently during the drive home. It seemed to occur when the steering wheel was turned to a specific spot, although I couldn't reliably duplicate it on command. At certain times though, that sound occurred--almost like the sound you hear when someone is grinding a copy of a house key, but nowhere near as loud. Same pitch though. I noticed too that although the car's alignment was perfectly true and straight, the steering wheel itself, when the car was moving in a straight line, was turned slightly off-centre. So I'm wondering if the sound is due to some kind of wheel alignment issue.
4. Gas mileage seems worse than I thought it'd be--I can't be sure, but I think we went through more gas on the way back with the 2nd gen than with the 1st gen. I'll have to measure though and get back to you all on this point.