Taxe malus will be charged on vehicles like a Mitsuibishi SUW. It literally doubles the price of the vehicle.
But if you have the money to build a new garage for that monster, which is so wide and high, that a regular garage will not fit to house the vehicle, then the malus is your least concern!
I do not envy the people that meet this vehicle on the small French roads!
I really don’t know, what these people in the design department of the automobile manufacturer think to make the vehicles that large. I wonder, whether they have ever been on the small roads!