Not a professional road test, mind you, but a personal one. Recently (yesterday) I took my daughter down to college, our two civics packed to the gills. One civic was a 2000 LX automatic with 60K miles, and the other was my 2005 HCH CVT with 15K miles.
One car following right behind the other: same roads, same speeds (travelling at roughly the speed limit: 55, 65, or 70
MPH). The drive includes flat interstate, urban freeway, and a couple of steep hills of 1500 ft to cross over.
Admittedly the 2000 non-hybrid is four years older, and 4500 miles wiser. But still there is some value in this comparison.
315 miles driven. The mileage results:
- 35.5 MPG for the 2000 civic non-hybrid (EPA highway is 35)
- 49
MPH for the 2005 HCH (EPA highway is 48)
I think that may be a reasonable comparison of what a person might expect, in terms of highway miles, from a non-hybrid civic versus the hybrid.