Hey All I'm looking to buy my first car and have narrowed it down between a 2007 Nissan Sentra and the 2007 Mazda3 GT. Both cars are very nice and specs are pretty close to one another but I'm having a hard time since the sentra has a way better side impact rating than the mazda and its a lil better on the fuel but isn't as responsive in driving like the mazda3 and also has much more interior space and trunk space. I like the mazda but reading these forums I'm starting to worry I noticed alot of people are complaining that after so many miles their car is rattling inside, or their feul economy goes bad or things need to be replaced whereas the nissans are good cars as I currently drive a 98 maxima and other family members have also had these cars dating back to the 80s and they still run good. The sentra doesn't come with heated seats like the mazda3 and I'm used to those since I have that feature in the maxima. Both cars come with standard 6 airbags abs blahblahblah I'm just worried that if I choose the mazda that within a years time I'm going to be taking back to the dealership to get everything fixed up Any input would be greatly appreciated.