One problem related to engine and engine cooling has been reported for the 2010 Lexus GS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Lexus GS based on all problems reported for the 2010 GS.
When the brakes are applied while in drive the rpms randomly increase from 500 to 1000 and the car inches up unless I apply more pressure on the brakes. This is usually noticeable while I am in the drive-thru at fast food restaurants while waiting in line. While waiting for 5 or so minutes it usually occurs 2-3 times. I rarely notice it happen at traffic lights as they usually don't last that long. It happens at least a few times a week.