talking about batteries, i think i either have a lemon or my dealer is giving me the run around. No matter how long I drive the car, the top two or three bars on the battery display never seem to fill up. Do I have a defective battery or cells? Or am I missing something? I recently took four trips of 600 miles (almost all flat driving) one way, straight driving except for brief gas/potty stops. Max number of bars displayed was 7 out of 9. I tried alternative driving techniques/cruise control and steady as possible foot. I am doing something wrong or expecting the impossible.

Also I can't seem to get over 35 mpg in town (crowded city, lots of stop and go) or 45 mpg highway..... about 70 mph. Any tips on what to do to get better mileage.