Diesel just can't catch a break, or so it would seem. The courts in Leipzig, Germany are set to make a ruling on Feb. 27 on whether or not to uphold a ban on diesel vehicles imposed by the cities of Stuttgart and Duesseldorf, according to Reuters.

This ban could have a hugely detrimental effect on the resale value of many of the diesel vehicles currently registered in those areas. The question of whether the manufacturers would be responsible for updating the vehicles is also essential, as environmental groups are calling for even the exhaust treatment systems on Euro-6 vehicles to be upgraded further at a potential cost of over $17 billion.

These rulings would also put the German government into a tight spot, as Chancellor Angela Merkel has already been criticized for her close ties to the automotive industry and her strong support of diesel as a way to reduce greenhouse gas emissions and improve air quality.

Germany is only the most recent major player to talk about banning diesel vehicles in its city centers. Mexico City, Paris and Madrid have considered implementing a ban by 2025, while Copenhagen may ban new diesel vehicles as early as 2019.

If the bans are upheld and expanded to other urban centers in Germany, it will serve as a huge wake-up call to the auto industry at large, which has been scrambling to pivot to hybrid and electric vehicles since Dieselgate broke in 2015.