Ford significantly ramped up its advertised Mustang Mach-E inventory after agreeing to a deal with Tesla for its customers to use the U.S. electric-vehicle market leader’s chargers, according to S&P Global Mobility data.

The Michigan-based brand tripled its advertised Mach-E supply by early June to about 11,000 units after selling less than 3,000 units so far this year, S&P says. That was just days after it and Tesla announced their charging deal.

Ford has sold 5,000 units of the electric compact crossover sports-utility vehicle in a month just once since it launched it in 2021.

“This could be a sign that Ford is truly entering the EV sales and share race,” said S&P analyst Matt Trommer in a company blog on June inventory trends.

Owners of Ford EVs can start using Tesla fast chargers in North America next year under the agreement, and Ford will revert to Tesla-standard EV connectors with its 2025 lineup. Trommer said Ford may be trying to leverage the marketing impact of the agreement to sell more Mach-Es.

In January, Ford announced it would ramp up Mach-E production this year to cut customer wait times, and also cut the model’s prices to make it more competitive in the EV market.

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