Does a litre of petrol burnt always produce the same amount of emisions (CO2 etc.)?
you actually have two questions here. 1) does a liter of petrol always produce the same amount of CO2 2) does the amount of CO2 / mile correspond to L / mile The answer to the first is technically “no”. Petrol isn’t a single chemical. It is a blend of many chemicals and that blend changes by location and time. Different chemicals produce different amount of CO2 upon combustion so the amount of CO2 produced per liter of petrol isn’t constant. The answer to the second question is “yes”. The amount of fuel burned while driving a mile directly corresponds to the amount of CO2 produced. If you burn more fuel, you produce more CO2. I suppose you could be getting at this as well. Does the mpg rating of a car correspond to the amount of CO2 produced? The answer to that is maybe. the actual Liters / mile depends on multiple factors. Like driving conditions (hills for example), whether or not you’re using your air conditioner, the quality of your air filter, etc. A car rated for 21 mpg may actua
