2010 Toyota Highlander Hybrid Limited 4dr SUV AWD w/3rd Row (3.3L 6cyl gas/electric hybrid CVT)
I've driven nearly 15K miles now, including two Alaskan winters.
The biggest drawback to-date for the hybrid technology is that even when the battery is fully charged and capable of operating in EV mode, the engine is needed to heat the air for the defroster.
In my climate, that cuts into the possible efficiency at least 5 months out of the year.
All told, including daily idle time to pre-warm the car for my wife, I still averaged over 18 MPG in the winter.
Everyday summer driving in the city is more like 23 MPG.
Best ever for a 100+ mile road trip, fully loaded with many hills was just over 27 MPG.
With that said, the drivetrain is exceptionally smooth.
Interior finish is OK.
Consider alternative to engine heat for front windshield defrost.