One problem related to engine noise has been reported for the 2007 Lexus GS350. The most recently reported issues are listed below.
2007 Lexus ES 350. Consumer writes in regards to vehicle unintended acceleration. The consumer stated she experienced sudden acceleration for 2 miles, that took the vehicle from 60 mph to 85 plus mph. During the acceleration period, she could not slow down despite taking her foot off the accelerator and pressing the brake pedal repeatedly. The vehicle eventually slowed down on its on accord and decelerated. She was able to stop the vehicle. The consumer also noticed the tachometer needle usually registered between 2000 and 3000 rpm's, began to widely fluctuate between 2000-6000 rpms with no corresponding change in the vehicle engine sound.