Porsche claims the Mission E’s range is well over 300 miles — surpassing the Model S’s 253 miles — even when driving hard, as auto enthusiasts are known to do. Depleted batteries can be recharged to 80 percent in 15 minutes with Porsche’s Turbo Charging system. The charging system’s network will take time to develop properly, and the battery’s durability must be further tested under performance conditions — two reasons Porsche isn’t rushing production. Mission E can also recharge at existing 400-watt charge stations.

Image Porsche Mission E Credit... Porsche

The all-wheel-drive Mission E concept — the front and rear wheels steer — includes two permanently synchronous electric motors similar to those used in the 919 Hybrid, the model used to win the Le Mans endurance car race.

And with 600 horsepower, Porsche says the Mission E reaches 60 miles an hour in under 3.5 seconds. Top speed is 155 miles an hour. Porsche engineers estimate that Mission E should complete the Nürburgring, a 12.9-mile racetrack in Germany, in under eight minutes, putting it in the company of gas guzzlers like the Lamborghini Murciélago and Porsche’s own 911 GT3 RS.

Dr. Hatz promises that the Mission E will have no slump in performance. “This is not a five-minute sports car,” he said. “The performance is very powerful and very repeatable.” Sustained runs of 140 miles an hour are not important in the United States, but they are on Germany’s autobahn.

Mission E will be built on an all-new chassis specifically engineered for electric vehicles. Dr. Hatz describes the platform as scalable, which could lead to other electric models, such as a crossover or pure sports car.

A fully electric powertrain is not the only advance. Mission E’s interior uses eye-tracking sensors and gesture control for the infotainment system, much like the kind found on the Xbox One.

Jesse Toprak, an automotive industry analyst at Toprak Consulting, sees Mission E as a welcome addition to the premium electric car segment that Tesla owns today. “It will definitely be a shot across the bow at Tesla, especially since Porsche already has a large base of enthusiastic owners to tap,” he said.