My 1.5 won't accelerate out of a corner - it just puddles along with the traction control light flashing until the corner is pretty much over. If I turn the traction control off the car powers out of corners like a rocket - plenty of grip. Car is really well behaved. I am wondering if something is wrong with the car, if Tesla did a firmware update that changed the TC, or if I am just more enthusiastic these days. Every now and again I forget to turn TC off after getting in the car - pulling out of a driveway or first corner I am reminded that TC is on because the car won't GO!