IIHS: Most self-driving systems fall short on safety, with Tesla scoring poorly

The Insurance Institute for Highway Safety (IIHS) tested 14 automated driving systems and rated 11 as "poor," including Tesla's Autopilot and Full Self-Driving.

The top 3 systems were rated "acceptable" (Lexus Teammate), "marginal" (GM's Super Cruise), and "marginal" (Nissan ProPilot Assist).

Tesla claims Autopilot makes driving 10X safer but IIHS says there's little evidence partial automation improves safety.

Federal regulators are investigating nearly 1,000 Autopilot-related accidents.

Automakers like Nissan, Ford and BMW said they will consider IIHS feedback as they continue developing driver assistance systems.