Occupant safety is a big selling point for the 2006 Chevy Impala. In crash tests conducted by the National Highway Traffic Safety Administration (NHTSA), the current-generation Chevrolet Impala earned five stars (out of five) for driver and front-passenger protection in frontal impacts, and four stars for side-impact protection. In frontal offset crash testing, the Impala earned a "Good" rating, the highest possible.