New diesel engines may have reduced harmful gases to minimum, but some scientist don’t really agree.
IARC claims that exhaust fumes cause cancer and scientists are suggesting diesel fumes should be reduced as much as possible. According to them, diesel fumes cause lung cancer and are closely connected with bladder cancer. This is why diesel fumes have been moved from 2A (possibly cancerous) to group 1 (definitely cancerous). Petrol engines remain in the 2A group for now.
Car manufacturers have stated that there have been enormous efforts to reduce this. They have invested billions into developing better engines and advanced filters for diesel engines in order to reduce harmful effects as much as possible. New diesel engines use fuel with less sulfur and this highly reduces emission of harmful particles – claims A. Schaeffer (Diesel Technology Forum).
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