Thread: EPA may fine VW
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Old 10-06-2015, 03:25 AM   #98 (permalink)
RedDevil
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Quote:
Originally Posted by redpoint5 View Post
A diesel vehicle typically achieves 30% better fuel economy than a comparable gasoline vehicle. Therefore, diesel is generally cheaper to run until it hits 30% or more expensive than gasoline.

This does not take into account that diesel versions of a vehicle typically cost more to purchase.
Also, diesel is much heavier per volume than gasoline. If it were sold per weight instead of volume the difference would be smaller.

The rest of the difference is caused by the higher compression ratio and having no air restrictions on the intake, so no pumping loss on lower loads.
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