You build the stop around a fast charger just off the interstate, roll in with 8 percent showing, and find two of the four stalls dark and a third frozen on an error screen. The fourth works, slowly. Fifteen minutes becomes forty. Bigger batteries answered the distance question. Most new EVs clear 300 miles on a charge, and the old fear of running flat between towns faded with them. A different worry took its place: whether the charger you are counting on will be working, and open, when you arrive. Parkopedia, the connected-car data company that supplies maps and charging information to many factory navigation systems, says the car can answer that before you commit. On May 28 it launched an expanded charging data feed for automakers that grades individual chargers on reliability and forecasts how busy each one will be at the hour you plan to stop. Key Takeaways - What launched: Parkopedia released an expanded EV charging data API for automakers on May 28, 2026, adding charger reliability grades and occupancy forecasts to in-dash navigation. - The problem it targets: Industry research cited by Parkopedia puts up to 43% of public chargers out of reach at a given moment, roughly 25% broken and another 18% too congested to use in dense markets like San Francisco. - A-to-F reliability grades: Each charger earns a dynamic grade from its history of successful sessions, so navigation can prioritize high-uptime locations. - Occupancy forecasts: Time-of-day data predicts when a site is likely to have an open stall. - Price before you plug in: The feed can show total session cost, including idle and overstay fees, ahead of arrival. - The catch: It is sold to carmakers, so it reaches drivers only once a manufacturer builds it in. No US rollout timeline was