I purchased my Sentra brand new in Jan of 2004 and had it till December of 2007 when it was totalled. I put on 130,000 miles within that period and I am very satisfied with the car. I didn't spend any money on the car besides the usual oil changes and brakes. I only had one problem wiht the car during the period I owned it. When the car was started cold in the morning, it would start on the first try but if I was to start the car later on, it would take any where from 2-3 tries for it to start. This problem started within a year of owning the car and worsened as time passed. This was not a big deal because all I had to do was turn the key again and the card would start.
Mileage, and a good pick up when you needed it. Low maintenance and practical.