I thought this was very interesting. The last time I was in Germany, in the 80's, I never once drove or rode in a vehicle that wasn't diesel - that's how prevalent they were. My relatives all told me it was a combination of cheaper fuel and better gas mileage. Now it appears Germany is going in the other direction. Nothing in the article about any "trades" to electric, so I assume most of the switch will involve gasoline.
I would assume with the greater restrictions equating to a higher price per liter to drive, there will be a forced incentive for people to switch away from diesel. I know that given both the expense of "clean diesel engines" in the US, and increasing diesel prices, I will never own a diesel vehicle again. My old '08 F-250 was the first generation of "clean diesel", and it was a shocking and unexpected increase in driving costs for me. I would only own a diesel pickup these days if I absolutely, positively, needed the diesel torque and power.
http://money.cnn.com/2018/02/22/investing/premarket-stocks-trading/index.html