Satified Owner 
2005 Nissan Altima Sedan 3.5 SE 4dr Sedan (3.5L 6cyl 5M)
4 years and still happy
 I bought my 3.5 SE new in 2005.  I only have 28000 miles but I have had very few problems.  The car has only been in the shop for routine maintenance.  However, in march of 2009 I had to replace my battery.  I have heard of others with this problem.  Overall I am happy.  The 3.5 engine has a lot of power.  This is fun at stop lights and has gotten me out of a few jams on the freeway.  The complaints about the road noise (esp in the back), turning radius, and cheap interior are valid.  They are not prohibitive however.  I live in DC now so the turning radius is more pronounced.  I have taking this car on 400 mile trips (I can get 33 mpg on the highway) and have been completely satisfied.  