Could car fumes cause lung cancer?

Not likely: The vast majority of lung cancer is caused by smoking - i.e. First hand cigarette smoke. Lung cancer is rare in people who have never smoked. If car exhaust were an important contributor we'd see far more cancer in people who had never smoked.

Watchout liver : Car fumes are detoxed by liver so keep detoxing your liver if u work in a field that involves inhaling car fumes a lot.

Any hydrocarbon can: ...Cause lung cancer. Any hydrocarbon combustion product, including car exhaust, will have carcinogens in it, but the volume and intensity of exposure, as well as the duration of exposure is several orders of magnitude less than that of a person who intentionally inhales cig smok for 20+ years, even if you live next to a busy street. Best advice? Don't smoke, and don't suck on a tialpipe.

Car fumes & cancer: Research has shown there is an epidemic of illnesses that are exacerbated by exhaust from vehicles, including cardiovascular disease, asthma, chronic obstructive pulmonary disease (COPD), and lung cancer.