NOx is questionable, but you’re 100 percent correct about PM. Wipe the inside of the exhaust pipe on a 2014 BMW or Ram with a Cummins and wipe the inside of the exhaust of a newer and lower mileage Ecoboost or Hyundai/KIA GDI and tell me which one has more PM. Diesel has can produce lower PM than gasoline engines will…

Humor is well and truly dead. great analysis.

I love manuals and wagons.