The International Agency for Research on Cancer has evaluated the carcinogenicity of diesel and gasoline engine exhausts and some nitroarenes. Diesel engine exhaust was classified as carcinogenic to humans (IARC Group 1). Diesel engine exhaust causes lung cancer, and positive associations have been observed between exposure to diesel engine exhaust and bladder cancer. Gasoline engine exhaust was classified as possibly carcinogenic to humans (IARC Group 2B).

Download IARC Monographs Volume 105 here.

Click here for more information on how IARC classifies carcinogens.