I do not know what you mean.
The point of my post was holds are customary, tried to use examples of holds.
You compared a rental car for two weeks to pumping gas for 5 minutes. No need to hold anything on pumping gas.
When the final amount shows $50, the amount on the debit card should show $50. If they enter $75 at the start, the 75 should be adjusted down to $50 as soon as the pump is shut off.
Is this 2013 or what?