IIHS only gives an "Acceptable" rating to the Model S for offset frontal collision. Tesla responds to newly released Model S crash-test rating "The IIHS said that, during the test, the Model S's seat belt did not prevent the driver's head from hitting the steering wheel hard through the deployed air bag." Tesla provides a response: "While IIHS and dozens of other private industry groups around the world have methods and motivations that suit their own subjective purposes, the most objective and accurate independent testing of vehicle safety is currently done by the U.S. Government which found Model S and Model X to be the two cars with the lowest probability of injury of any cars that it has ever tested, making them the safest cars in history." Unfortunately for Tesla owners, the IIHS impacts insurance rates which are already under assault for Tesla repair costs. It's not been a good week for Tesla.