WHEN THE ENGINE IS WARN AND YOU SHIFT FROM PARK TO DRIVE OR REVERSE THE CAR JERKS REALLY HARD BEFORE IT GOES TO THE DESIRED GEAR. ONCE IT PICKS UP YOU WILL FEEL A JERK WHILE DRIVING ESPECIALLY WHEN YOU ARE SLOWING DOWN FROM HIGH SPEED TO A STOP. IT REALLY JERKS AROUND 2ND AND 3RD SHIFTING, PICKING UP OR SLOWING DOWN. DURING DRIVING WHEN YOU DEPRESS THE ACCELERATOR, IT DOES NOT PICK UP RIGHT AWAY AND THE ENGINE WILL RAVE BEFORE IT KICKS IN WITH A JERK. THE TRANSMISSION SLIPS BEFORE IT PICKS UP. ONCE YOU START ACCELERATION, THERE IS A RATTLING SOUND WHEN YOU PRESS THE GAS. I HAVE TAKEN IT TO THE DEALERSHIP SEVERAL TIME AND THEY TELL ME THEY CANNOT FIND ANYTHING WRONG WITH IT AND THAT I SHOULD ALWAYS USE PREMIUM GAS. THE LAST TIME I HAD TO SPEND $500 TO REPLACE THE VISA VALVE AND EVAP VALVE THE PROBLEM STILL CONTINUES. THIS HAPPENS AFTER DRIVING THE CAR AND IT HAS WARMED UP. THE DEALERSHIP CANNOT REPLICATE THE PROBLEM BECAUSE WHENEVER YOU TAKE IT IN THEY WAIT TILL THE ENGINE HAS COOLED DOWN BEFORE THEY TAKE IT FOR A TEST DRIVE. IT SOUNDS TO ME LIKE THEY DO IT ON PURPOSE. MY CAR IS ABOUT 110K MILES AND THIS STARTED ABOUT 10K MILES AGO. *TR