What specifically is the reason the regulations need flexibility?
The impact on the bloc of the regulations as they are appears to be more detrimental than anticipated when drafted or approved.
Glad I am in the US where we will be able to buy gas cars well past 2035 and there are companies like BMW who plan to continue making ICE indefinitely.
You'll be able to buy petrol powered cars in Europe well past 2035 too, you just won't be able to buy a brand new one.