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Companies offering driver-assistance systems and developing autonomous vehicles are entering a new phase of more exacting oversight.

NHTSA has opened an investigation into Zoox, the autonomous vehicle subsidiary of Amazon.com Inc., after two incidents in which its SUVs suddenly braked and were rear-ended.

The Biden administration gave carmakers a partial reprieve in finalizing EV tax credit rules intended to loosen China’s grip on battery materials crucial to the car industry’s future.

U.S. automakers achieved a record average of 26 miles per gallon for vehicles made in the 2022 model year, but still fell short of current fuel standards, according to EPA data on Dec. 20.

Carmakers like General Motors and Ford are lobbying against an extraordinary push by U.S. regulators to force a recall of as many as 52 million air bag inflators.

Stellantis NV, owner of the Jeep and Ram brands, is petitioning against emissions standards adopted by California and 13 other states that it says give competitors unfair advantages.

Ford Motor Co. says it would face $1 billion in fines from 2027 to 2032 under stricter proposed average fuel economy rules that target SUV and truck manufacturers.

General Motors, Ford and Stellantis face a combined $10.5 billion in fines from 2027 to 2032 under stricter proposed average fuel economy rules, according to an estimate from their trade group.

Hilton Worldwide Holdings Inc. is partnering with Tesla Inc. to install 20,000 universal electrical vehicle chargers at 2,000 of its hotels in the U.S., Canada and Mexico.

Tesla is facing increased scrutiny from federal regulators over a possible work-around of monitoring meant to keep drivers’ hands on the wheel while using Tesla's Autopilot system.