You misunderstood (deliberately?) the earlier figures. “ Imperial College London, globally renowned experts in air quality research, have looked at the health burden of air pollution in London.
Their research found that in 2019, toxic air contributed to the premature deaths of around 4,000 Londoners. “ Nobody said that the 4000 deaths from pollution were solely caused by exhaust emissions from diesel cars, but the total is still way below the number of people you say we’re killed, by a factor of 40! You may be blasé about 4000 deaths a year, even out of a large London population, but many of us aren’t.