C
Weak Public Transit
Except for the light rail which is great, the public transit isn't very reliable (the buses take FOREVER) and it's very hard to get out of the university/downtown Tempe/downtown Phoenix without a car. The immediate area around the university is great for walking and biking, but there are other nice areas only reachable by car. And Lightrail does not reach them nearly enough. Car parking is expensive, but after your first year or two a must.
Campus transport=great and easy. Bike is all you need, maybe use the on campus shuttles.
Local=mostly good, light rail will get you to most of the places college students like to go.
Beyond local=you need a car. No way around it.