The test fleet is made up of
215 vehicles, using 12 different models including the ubiquitous Prius...
... And the funky looking Renault Kangoo PHEV...
I haven't delved into the detailed reports, but for those interested in plug-in conversions, DOE's Advanced Vehicle Testing Activity (AVTA), INL, and testing partner Electric Transportation Engineering Corporation have released a bunch of reports.
The goal of the test was to compare energy consumption of the PHEVs to non plug-in vehicles.
Not surprisingly, they determined that the main factors affecting energy use were driving style, state of charge, and ambient temperature.
Interesting nugget:
Quote:
The INL reports that even in not-so-optimal environments, the PHEVs actually improved fuel economy by 30 percent. The highest fuel economy improvement they recorded was 95 percent.
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Advanced Vehicle Testing Activity - Plug-in Hybrid Electric Vehicles