.. NHTSA has now closed that engineering analysis, which examined 956 crashes. After excluding crashes where the other car was at fault, where Autopilot wasn't operating, or where there was insufficient data to make a determination, it found 467 Autopilot crashes that fell into three distinct categories.
First, 221 were frontal crashes in which the Tesla hit a car or obstacle despite "adequate time for an attentive driver to respond to avoid or mitigate the crash." Another 111 Autopilot crashes occurred when the system was inadvertently disengaged by the driver, and the remaining 145 Autopilot crashes happened under low grip conditions, such as on a wet road.
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NHTSA also found that Tesla's telematics system has plenty of gaps in it, despite the closely held belief among many fans of the brand that the Autopilot system is constantly recording and uploading to Tesla's servers to improve itself. Instead, it only records an accident if the airbags deploy, which NHTSA data shows only happens in 18 percent of police-reported crashes.