Electric cars and trucks captured 7 percent of the U.S. light-vehicle market in the first quarter of this year, up from 4.6 percent in the year-earlier period, according to new-vehicle registration data from Experian.
EV registrations numbered 257,507 for an increase of 63 percent. Total industry registrations were just over 3.69 million, Experian said, an increase of 8.4 percent.
The growth is coming as traditional automakers turn on the faucet for new EV models. Legacy brands and recent industry startups took nearly 40 percent of new U.S. EVregistrations in the first quarter, chipping away at Tesla's market dominance, according to Experian data.
Brands gaining EV market share include Chevrolet, Ford, Volkswagen, Rivian, Mercedes-Benz and BMW, Experian numbers show. Those losing ground compared with the first quarter of last year include Tesla, Hyundai, Kia, Audi, Nissan and Polestar.
Overall, Tesla still had the bulk of the EV market with 6 of 10 registrations, but that was a drop from its 72 percent market share a year earlier.
Tesla's Model Y captured a 36 percent share in the first quarter, thanks to price cuts and new eligibility for a federal tax incentive as of Jan. 1.
Tesla's total new registrations rose 37 percent to 155,360 in the first quarter, Experian said.
Because Tesla doesn't break out U.S. sales from global numbers, registrations serve as a proxy.
J.D. Power said in a report earlier this month that despite growing market share for EVs, many consumers are still wary of the new technology. Barriers include a lack of reliable public charging infrastructure, relatively high purchase prices and confusing new rules for federal EV incentives. J.D. Power said EV market share fell to 7.3 percent in March from 8.5 percent in February.
"Although some month-to-month volatility is to be expected, a closer look at the barriers to EV adoption shows that many new-vehicle shoppers are becoming more adamant about their decision to not consider an EV," J.D. Power said in the report.
In March, 21 percent of shoppers said in a survey that they were "very unlikely" to buy an EV, up from 19 percent in February, J.D. Power said.