Jake, Cougar, Yep, I agree with ya both.Edited: 6-5-2011.My friend and I went Prius shopping last winter when it was below zero. There were deals to be had with many used Prius' on the lot. Not so much now. As the weather has warmed up, my friend's Prius gets better and better gas mileage. Below 0 degrees Fahrenheit it got around 32mpg around town, 3 miles or less driving. The Prius' worst in winter was around 28.7 mpg, on a very cold spell. The rest of the winter the Prius got 34mpg to the low 40's, depending on distances driven in town. As temps got into the 20's and 30's and higher, the gas mileage climbed steadily. Out on the interstate, depending on wind and how far over 70 mph, it gets between 38 and 44mpg. Watching speed could possibly see low 50's. So far his computer mileage is usually within a mile per gallon difference with manual calculation at the pump. In summary, an 07 Prius can get 40-48 mpg in town (with longer trips, and less cold start-ups and warm-ups), and 42mpg and higher on the interstate without trying too hard or watching speed,..within reason. Winter in really cold regions can be a little disappointing if you go weeks with short in town driving and only getting high twenties to low thirties in gas mileage. Some people get opposite numbers, where they get better interstate numbers, and much worse city numbers. Short distances and cold affects hybrids much more. I need to verify, but it seems that Consumer Reports got city gas mileage around 34-35, and highway around 47-50mpg, averaging 42-44mpg. Touring models with the bigger touring tires and more rolling resistance, not to mention more options and weight, gets slightly worse gas mileage. Consumer Reports should list the average temperature in the time frame that each car was tested for gas mileage, but they may adjust for warm-ups. Some forums have people posting outrageously great gas numbers, while attacking anybody that gets worse gas mileage. There needs to be better definitions of city and traffic driving, versus suburb driving. People doing out of the norm hypermiling techniques and driving way below speed limits need to make that clear too. My friend's numbers could also be influenced by a higher number of topping off to get real world calculations of mpg during certain driving conditions, instead of going through a whole tank which would average things out more. Going through a whole tank would also limit gas pumping inconsistencies.
http://web.archive.org/web/200...x.htmh ... rg...y.htm best and worst gas mileage
2010 Vibe 1.8 auto, fwd, base, air, preferred package, cargo mgt, cargo cover, ultra white.