I've had this happen to me a few times and the dealer can't reproduce this. I'm driving agressively in Drive Mode and tap over to Sports Mode and continue at high revs. At some point I tap back to Drive Mode but notice that it's stuck in a low gear. I can be decelarating and crusing at about 20 MPH but the RPMs are at about 3500-5000. The only way to 'cure' this is to tap back to Sports Mode and then to Drive. I've discovered that to prevent this from happening frequently I wait till I'm in lower RPMs to shift back to Drive from Sports Mode. Has anyone had this happen to them?