It's possible to the exact same range using Normal mode and Sport mode...
The ball/leaf on the Gen2 tells you what you need, in normal mode if you ever press the accelerator beyond 10-15% you're already off the charts...The 2017 EPA cycles actually changed from 2016 to account for more aggressive driving (the MY16 Volt was advertised using 2017 EPA cycles)...Driving a Hellcat and not stepping on the accelerator beyond 15% will also exceed the EPAs rating...The same car, the Buick Velite 5, got rated by China's EPA 72 miles...