Quote:
Originally Posted by kir_kenix
Imagine what a Fiesta or Chevy Spark would end up weighing...a very light and inexpensive .5L turbo would be adequate and return amazing MPG.
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I have a 900kg (OK not super light for it's size but lighter than Fiesta/Spark etc), 2 cyl 875cc turbo that gets terrible economy, ~45MPG US. It's also impossible to beat the EPA figures with. Of course, the small turbo twin is more expensive than the standard 'four'.
There seems to be a limit to how small you can go.