A new "drive-by-wire" system is Lexus' answer to the hesitation problems that some owners are complaining about. Consumer Reports stepped in and said that they believe it may be something else (CR is the Inspector Clouseau of mechanical problems). Lexus has stated that they are aware of the acceleration hesitation problems. "After firm pressure was applied on the accelerator petal and trying to accelerate quickly". Or as a normal person would say, "I pressed on the gas, fully expecting the car to go and pull out in traffic and nothing happened." Models are the 2002-2004 Lexus ES300/330 models with the five speed trans.