* Vehicle type and age: Older vehicles with less efficient engines and poor maintenance tend to emit significantly more CO than newer, well-maintained vehicles. A gas-powered car will emit more than a hybrid or electric vehicle (which produce virtually no CO).
* Driving habits: Aggressive driving (frequent acceleration and braking) leads to higher emissions than smooth, consistent driving.
* Mileage: The more miles driven, the more CO emitted.
* Engine condition and maintenance: Regular maintenance, including proper tune-ups and repairs, significantly reduces CO emissions.
* Fuel type: The type of gasoline used can slightly affect CO emissions.
While specific emission data is available for individual vehicle models through government agencies (like the EPA in the US), it's presented as grams or pounds of CO per *mile* driven, not per year. To get a yearly amount, you'd need to know the vehicle's emissions per mile and the total miles driven in a year.
Therefore, to estimate the CO emissions for a *specific* car in a *specific* year, you'd need information on its CO emissions per mile (from its specifications or emissions testing) and the number of miles driven that year. Then you could perform the calculation.
Without this data, giving a general number is misleading and inaccurate.
