A 1st gen 5-speed Insight will beat a Prius in the hands of a dedicated hypermiler.
They also respond proportionately better to mods (which expand its ultra-efficient lean burn mode). Mine was returning well over 100 MPG US cruising at 50 mph in summer weather (on a level road). 100 MPG+ round trips were common for me, and most of the time I owned the car, hybrid electic assist was intentionally disabled.
But also consider: the
newest 1st gen Insights are now 10 years old, and they come with the usual 10 year-old car problems, plus specific Insight issues.
FYI:
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http://ecomodder.com/forum/showthrea...ems-18892.html
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http://ecomodder.com/forum/showthrea...ius-22514.html