U. S. gallons. My car is a large luxury performance sportwagon.
There are no cities with full bans on Euro III diesels or any diesel yet that I'm aware of or been denied entry in Sweden, and those few cities in Germany that do have them have only implemented partial restrictions.
The bans are not real, it's all just political maneuvering in order to get cheap votes.
As for MPG are you talking US gallons or imperial? Also what's your car's segment?