Congrats on your purchase! You will be happy. Vibe owners tend to Love their cars.
The main difference is with sheet metal. It is more than the front end, the windows and lift gate are different as well.
Mechanically they are Toyota Corolla. The interiors are basically the same with the notable exception of the cabin air filter being a slightly different size!
Look at any part on the car, the computers under the seats, the engine electronics, everything mechanical says TOYOTA.
When I got the car new in 08, my son in law had an 07 Corolla, we parked them side by side and popped the hoods, there was ZERO difference. Part for part, identical cars.
The Vibe is (was) made in California at the NUMMI plant along with Corolla, the Matrix is made in Canada.
I have an 08 VIBE and have nothing but praise. Get your parts from Toyota, they cost less for GM buys them from Toyota to resell as a GM part.
IF you have an automatic, check the oil and change it about 60,000 miles. It tends to get dirty quickly despite Toyota's claim of 100,000 miles. It will get very dark red and smell. The filter can be cleaned, it's just a metal screen but check the pan for debris and clean things up in there.
Don't do a trans flush with "cleaners", not a good idea on any car.
Best of Luck, Enjoy!
Check out
Generation Vibe Discussion Forums: Main
register, it is a very active Vibe web site. There are a lot of good people on there that can help you with many questions. It is a good companion to this and other Toyota based sites, I look forward to seeing you there.
Dave