The Audi A3 sedan comes standard with forward collision warning plus a low-speed auto-braking system that can help avoid fender-benders; a high-speed auto-braking system is optional, as is the full range of high-tech accident avoidance features. Be aware that this is the smallest and lightest luxury car on our list, and despite its lofty ratings and sophisticated features, the laws of physics dictate that it can’t be expected to perform as well in a crash with a larger and heavier car or truck.