SageBrush wrote:The UK set CO2 tariffs and emissions limits.
The diesel manufacturers cheated to meet the emission limits.
You fail realize this one little detail: Euro 5 emissions limits permit a diesel car to emit 3X as much NOx as a gasoline car.
So even diesel vehicles which complied with the laws pollute more than gasoline cars. (And that wasn't even in place until 2011. Euro 4 standards before them were even higher with the ratio a bit more than 3X for diesel NOx.) And every diesel car is allowed to release 600 BILLION PARTICLES into the air every kilometer! Gasoline cars do not emit as much particulate matter. Again, the UK has been heavily subsidizing highly-polluting diesel vehicles over the lower-polluting gasoline alternatives to the point that the diesel sales overtook gasoline vehicle sales and the fleet of diesel cars grew from a 7.4% share to a 1/3 share in only nine years
It doesn't take a rocket scientist to see that subsidizing the highest-polluting option available will result in an increase in pollution.
London got the air quality that they paid for. All in the name of reducing the production of CO2, which is vital for all life on Earth.
Again, they have not learned their lesson, as they are trying to reduce pollution by putting a limit on CO2 emissions. If they want to ACTUALLY limit pollution, then they should put limits on pollution, not CO2.