It is (annoyingly) unclear how much battery the car will reserve - which makes it hard to tell when that would happen - could you induce it?And what happens when you kick down again, and again , and again, without any regen braking, and not giving it enough time for the engine to charge it again. It might work once or twice but it's basic physics, you'll soon be left with a 148bhp petrol engine and no battery.
Yes probably by draining the battery and going to a race track and doing back to back 0-60mph and full emergency stops to cook the brakes and prevent regen. - but how many times - 4? 6? I'm not aware of anyone having tried.
Beware though if you aren't going to charge it the fuel economy won't be special - as the tech is based on a GTE - maybe mid 30 mpg?
https://www.carmagazine.co.uk/car-r...olf-gte-hatchback-2018-long-term-test-review/ - longterm average without plugging in 38mpg - granted 2018 Model GTE with 204 bhp