Driving old Jeeps that leak oil, burn oil, and get shit fuel economy daily because it's a "project" also harms the environment.
I think a greater harm to the environment is the collective pile of old ass beaters that are miraculously on the road still. The leak oil into our rivers and waterways, burn excessive fuel and oil, the emissions systems are disregarded due to the owner being unable financially, or unwilling to fix it.
Id bet geetos rusty clunker of a jeep does far worse on an emissions test than a tdi properly calibrated to not cheat emissions.