Why a New Crop of Electric SUV Batteries Are Coming Up Short

First it was the Jaguar I-Pace. Researchers studying electric vehicle performance at Carnegie Mellon University were surprised last fall when the sporty electric crossover received a disappointing range rating from the EPA. The 234-mile rating, from a 90-kWh battery, was six miles short of what Jaguar had projected, and 16 miles short of the researchers’ own estimates. That difference might not seem like much—until you’re stranded on the side of the highway. Now it’s an Audi crossover’s turn to disappoint. The company’s electric E-tron SUV, which goes on sale next month, just received its own EPA rating: 204 miles from its 95-kWh battery. That’s about 20 miles shy of what many had projected (though in line with a few too), …