Investing.com — Tesla’s (NASDAQ:TSLA) latest version of its Full Self-Driving software is “suspect” and still requires improvement to ensure Robotaxi operations can be safely undertaken, independent automotive research firm AMCI Testing said in a Tuesday statement.   

An extensive 1,000-mile evaluation of Tesla FSD software exposed how often human intervention was required for safe operation, AMCI Testing said. While the Tesla’s latest FSD software is “impressive,” the automotive research firm said its drivers had to intervene over 75 times during the evaluation; an average of once every 13 miles. 

These result “demonstrates just how far Tesla must go before Robotaxi operations can be safely undertaken,” it added just ahead of Tesla’s Robotaxi unveiling slated for Oct. 10. 

“Getting close to foolproof, yet falling short, creates an insidious and unsafe operator complacency issue as proven in the test results,” said David Stokols, CEO of AMCI Testing’s parent company, AMCI Global. 

AMCI Testing said it found that the more miles driven with FSD engaged, the more likely a driver were to encounter these failure modes.

Tesla Inc (NASDAQ:) was up 1% in recent trading.