I purchased my 2009 Cabriolet Passion in March 2010, with 297 miles on the odometer. I am now just over 900 miles. My commute to work is 1.5 miles each way, 6 days per week. I change gears manually, use 92 octane fuel without ethanol. A/C is on about half the time. MPG has been all over the board. Highest was 37 mpg and the current tank is 20 mpg. Only got over 30 mpg one time (the 37 mpg tank), but the range has varied 10 mpg at times. Also, my fuel gauge would not register a full tank for the first few tanks, would sit at 7/8 for days, then go to full for a day or so, then drop back to 7/8. Of course the gauge was at the full mark when I took it to the dealer, so they didn't see the problem. Any known issues? I am now taking it to the dealer since this tank has 3 of 8.5 gallons left and have only traveled 108 miles.