The outcome is a stunning rebuke for Tesla, which for years has fought to absolve itself of responsibility when its technology is involved in a crash.

Tesla Inc. was told by a jury to pay $243 million over a 2019 Autopilot crash in Florida that killed a young woman and seriously injured her boyfriend, the first significant court loss for the automaker in litigation related to its driver-assistance technology.

Tesla was found partly liable in a wrongful death case involving the electric vehicle company's Autopilot system, with a jury awarding the plaintiffs $200 million in punitive damages.