Does avgas and jet fuel emmit more or less co2 than usual car fuel?

Question

can you tell me the answer and why. Also, i assume avgas wouls be less than car fuel becuse i think there is less oil in it.

And, this is per litre. So per litre of AvGas to Car fuel.

Answer 1

avgas is high octane auto fuel with lead added (even low lead avgas) - there are no emmisions supressors in planes (catalytics) - so i suspect that planes are worse 1-to-1, but if i fly my plane for 1 hour, i go 150 miles - car has trouble going 60......

jet fuel is refined diesel (or kerosene - same thing) - it is less volatile, but slightly more btus per gallon than mogas. (less that std diesel)

avgas 18.355 pounds CO2 per US gallon,

wasn't able to find jetA numbers.