Originally Posted by
DaveZS
You can easily have a car mapped for more power, while being more fuel efficient. If its more efficient its going to have less emissions surely?
The weight one, of course heavier means more emmissions if you are talking about 2 of the same car, one being heavier than the other, but that isn't what the report was getting at.
That isn't really true. I bet that a newer model fiesta is both heavier and has more power than say a mk2/3 fiesta (engine size for engine size) and yet would have lower CO2 emmsions.
bu the new fiesta is also 20 years more develpoed than the mk 2
but think of it this way, if you were to put a cat converter onto a mk2 and remove the one from the newset versions, what would happen?