To start off, my car is a 2011 GT with a manual transmission. Build date is August 2010, and it only has about 2950 miles. Just a couple days ago I started experiencing a slight drivetrain shudder on take-offs. It feels like driving slowly over a rumble strip, and the vibrations seem to be coming from under the front seats or to the rear of the car. Right after start-ups is when it's worst, but the shuddering is still noticeable at stoplights and stop signs. Has anyone else experienced this? I'm taking it in to the dealership tomorrow to get the transmission fluid changed and am definitely going to ask about this problem.