Purchased my Sentra in 2006 and have owned it ever since. She's always been good to me and I've made sure to keep up with the maintenance. The only major work I've had to do is the CV axles and the exhaust...which were a bit pricey but other than that it's been good and the parts are cheap and the car is easy to work on. I live in the Austin area so inspection and emissions tests are required. My car's always passed wonderfully, so there's never been any expensive emissions problems like that.
Gas mileage, easy repairs, easy to work on, cheap parts, many aftermarket add-ons. Car handles very well when you need it.
More power! Needs a turbo stock. When I run the AC the car has NO power. Engine could use to be more responsive.