Nothing boosts electric vehicle driver satisfaction more than charging stations near convenient amenities, and nothing sinks it faster than broken or unreliable chargers, according to a new study by University of Michigan-Dearborn researchers.

The research, a collaboration with Ford Motor Co., analyzed about 17,000 Google Maps reviews of EV charging stations to understand what drives satisfaction and dissatisfaction. Using ChatGPT-4.0 to sift through real-world, user-written reviews rather than survey responses, the team identified 12 major factors influencing charging station experiences.

Of those, positive mentions of “amenities and location,” such as nearby restrooms, restaurants or shops, were the strongest contributors to high ratings. On the other end of the spectrum, negative comments about “reliability and maintenance,” like chargers being out of order or repeatedly malfunctioning, were the most damaging to a station’s reputation.

“Drivers clearly value convenience,” said lead author Zifei Wang, a doctoral student in industrial and manufacturing systems engineering at UM-Dearborn. “But nothing frustrates them more than showing up and finding a charger that doesn’t work.”

While amenities and reliability topped the list, other factors also played important roles. Charging speed and efficiency often made or broke a driver’s opinion—slow charging paired with high prices drew especially harsh criticism. Accessibility, such as the number of available stalls or ease of getting to the site, was another consistent theme.

Some reviewers were willing to overlook certain negatives if other aspects were excellent. One driver praised a station as “a free DC charger” that worked quickly, saying, “What can I say bad? It works and can do 110-120 kW if it’s just your car.”

Others weren’t as forgiving. One reviewer called their experience “absurdly expensive” and complained it was “the slowest charger I’ve ever used,” adding, “I’m a captive consumer since this is my only charging option in my apartment complex.”

The researchers say the heavy influence of negative experiences suggests that fixing problems may be even more important than adding perks.

“Drivers may not mind skipping a coffee shop nearby,” said co-author Feng Zhou, professor of industrial and manufacturing systems engineering at UM-Dearborn. “But if the charger is broken, they won’t come back.”

Most previous studies on EV charging satisfaction have relied on surveys or simulations, often with limited sample sizes. This study set itself apart by analyzing a large volume of actual user reviews from a public platform, offering what the authors describe as “authentic and unfiltered” insight into everyday charging experiences.

The findings offer clear guidance for stakeholders across the electric vehicle landscape, the researchers say. For charging network operators, reliability and maintenance should be top priorities. Regular upkeep and quick fixes for outages could prevent the most damaging complaints. Choosing locations near food, restrooms and shops could boost ratings and encourage repeat visits.

Policymakers could use the data to target funding and incentives for stations in high-demand areas and promote user-friendly design standards, say Wang and Zhou.

EV manufacturers can play a role too, they say. Integrating features such as real-time charger availability, predictive maintenance alerts, and more intuitive charging interfaces into vehicles could help reduce range anxiety and improve the overall charging experience.

By focusing on the aspects that matter most—and especially by eliminating the most common frustrations—the study suggests the industry could boost user satisfaction and, in turn, support wider EV adoption.

The authors emphasize that this is not just about technology—it’s about the experience. And thanks to its use of large-scale, real-world review data, the study offers a uniquely grounded look at what EV drivers actually want.

“EV charging is not just plugging in,” Zhou said. “It’s about finding a station, having it work, and having the time you spend there be convenient and pleasant. That’s what keeps people coming back—and what will help the EV market grow.”