My new 2013 Lexus rx-350 makes a significant audible "clunking" sound from the rear of the vehicle when the vehicle comes to a firm stop at either low or high speeds. This clunking sound occurs with every stop from just a few miles an hour to faster speeds. Lexus of las vegas maintenance personnel have looked at the car and confirm the "clunking" sound is frame/suspension related and is not a loose spare tire or other issue. They indicate it is not a safety issue and there is no fix as it is a peculiarity/defect with all 2013 Lexus rx-350 cars. I personally drove another 2013 Lexus rx-350 at the dealership which make the same clunking sound from the rear of the vehicle. The repeated "clunking sound" is is definitely a vehicle defect in my 2013 Lexus rx-350. I am not a safety engineer nor were any of the Lexus representatives who looked at the car and the "clunking" sound issue. I am concerned that this is a significant safety issue. From a mental state of mind standpoint, the repeated "clunking" sound when stopping is a major attention distraction and represents a safety issue for me given it's intensity and constant repeatability. My 2013 Lexus rx-350 can be made available for your inspection. Request you research the root cause of the repeated "clunking" sound in the 2013 Lexus rx-350 series of vehicles, and my vehicle, and determine if it is a safety issue for me and others who own 2013 Lexus rx-350 vehicles.

- Wasilla, AK, USA