Tesla announces big plans for cheaper iron-based batteries

Tesla Inc. is planning to install iron-based batteries that are not only cheaper, but less of a fire hazard, in a version of an affordable electric vehicle and a semi heavy electric truck, according to reports.

DOJ wants Tesla documents on automated driving

Tesla Inc. is already facing multiple investigations by the National Highway Traffic Safety Administration for problems with its two driver-assist systems, Autopilot and “Full Self-Driving.”

Tesla cuts vehicle prices in bid to boost flagging demand

With its sales slowing and its stock price tumbling, Tesla Inc. slashed prices dramatically Friday on several versions of its electric vehicles, making some of its models eligible for a new federal tax credit that could help spur buyer interest.