Consumer Reports: Tesla's New Autopilot Update Worse than Human Driver

According to CR, the new Autopilot didn't leave enough room for approaching cars when it changed lanes and would regularly brake with no warning after merging into congested traffic trying to create more space between it and the vehicle in front of it.

The new Autopilot would sometimes try to pull a maneuver that happens to be illegal in Connecticut, where the testing took place, and the CR said that its testers would sometimes even have to override the Autopilot system's lane change decisions over safety concerns.

"It's incredibly nearsighted," wrote CR's senior director of auto testing, Jake Fisher. "It doesn't appear to react to brake lights or turn signals, it can't anticipate what other drivers will do, and as a result, you constantly have to be one step ahead of it."

"The system's role should be to help the driver, but the way this technology is deployed, it's the other way around,"

The review makes a bottom-line assessment of the latest update and says it cast real doubt on Elon Musk's claims that Tesla will have full-self driving vehicles by the end of the year. "Despite Tesla’s promises that it will have full self-driving technology by the end of next year, our experience with Navigate on Autopilot suggests it will take longer," they said. "In addition, experts tell CR that the automatic lane-change feature demonstrates the technological limits of Tesla’s current hardware."

Tesla responded to Business Insider's (BI) questions about the issues brought up by the CR review and were told that "its vehicles have safely made millions of lane changes with the automated lane-change feature."

BI goes on to note that the Tesla representative also help up an April 3 blog post wherein Tesla states that after an internal review of their data, "that the safety level of Autopilot with the lane-change feature was similar to the version without it."