“doesn’t have to be” but in practice they in fact are. I wouldn’t call this a bias problem; it’s that people are making and selling and buying huge and inefficient vehicles.
The newer engines are a lot more efficient, but in the US (and a lot of other places) that increased efficiency has been used to move a bigger heavier vehicle, rather than to cut overall fuel use.
“doesn’t have to be” but in practice they in fact are. I wouldn’t call this a bias problem; it’s that people are making and selling and buying huge and inefficient vehicles.
Inefficient? A modern car no matter what size is always more efficient than a small car from the 90s. Just look at the euro emission standards.
A 1985 Honda Civic got 34mpg. A modern Ford F150 gets between 14 and 25
The newer engines are a lot more efficient, but in the US (and a lot of other places) that increased efficiency has been used to move a bigger heavier vehicle, rather than to cut overall fuel use.