The milage on my 2003 prius was about 42 mpg average. After I put in the enginer system it has gone up to about 62 mpg. Because we live on a mountain and my house is at 1500 feet above sea level we go up and down a lot. On a trip from my house down to sea level and then back up to my house I get about 62 mpg. If I just drive on the flat land I get more like 80 mpg.
-Mark, HI, 2003 Prius
I only have a 4kw kit in my Altima and went 3 weeks between fillups... 1033.9 miles. About 44 miles per day. 86.88 mpg.
-Bruce, NV, 2009 Nissan Altima Hybrid with 4KWH Enginer System
Electric Autosports and the Vancouver Electrical Vehicle Association tell me that I may very well have the first PHEV in Alberta! My last fill of the 40 litre tank (8 gallons) took my Prius about 940km. Much of my daily commute is highway driving. For days that I am driving around town (under 60km/h or under 40 miles per hour) your system has resulted in trip readings of over 100mpg!
-Andrew, Alberta, Canada, 2005 Prius with 4KWH Enginer System
I just had to share! I finally finished my first full tank of gas in my 2010 Prius. I averaged 94.1 mpg! It took me 91 days from the fill up.
-Phil, Tennessee , 2010 Prius with Enginer 4KWH Kit
I am netting 80 mpg in city, 77 mpg at 55 on interstate
-Mark, VA, 2010 Insight
Just had my 4kw kit installed today on my 2005 prius and drove 45 miles from installer to my home and avg 106 mpg on my scangauge II!! Majority of my drive I would say 80% was on U.S.19 at 55 mph and 5% was at 45 mph and remainder of drive was a mix of 25 to 35 mph.
-Stefano, FL, 2005 Prius
Last tank with 2 gallons of gas left, 1,550 miles 12.9 gallons of gas for 120 m.p.g. average. Could see a 1,600 mile tank
-Tom, Indian, 2010 Prius