Hundreds of automated vehicle crashes reported last year, many involving Teslas

Automakers reported nearly 400 crashes of vehicles with partially automated driver-assist systems, including 273 involving Teslas, according to statistics released by U.S. safety regulators on Wednesday.

The National Highway Traffic Safety Administration cautioned against using the numbers to compare automakers, saying it didn't weight them by the number of vehicles from each manufacturer that use the systems, or how many miles those vehicles traveled.

Automakers reported crashes from July of last year through May 15 under an order from the agency, which is examining such crashes broadly for the first time.