How much CO2 does a passenger car emit per kilometer traveled?

The carbon dioxide emission depends on car’s engine capacity and also on the type of fuel used. An average mid-size petrol car having 1600 CC engine would exhale about 185 grams of CO2, whereas a diesel car of the same capacity would produce around 150 grams, because diesel engines are significantly more fuel-efficient than petrol engines. However, diesels kick out more particulates, a major downside in metro cities where air quality is already a grave problem.

An electric car doesn’t give off any CO2, provided it is recharged using renewable electricity. If the electricity is that of a fossil-fuel power station, such car would be indirectly accountable for polluting environment with about 60 grams of CO2 per kilometer. Nevertheless, the electric car meets most green credentials.

More reading:
Electric car (Wikipedia)
Fuel efficiency (Wikipedia)
Fuel economy in automobiles (Wikipedia)

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