I searched around some other
I searched around some other forums. Supposedly in theory, E10 will drop mpgs by 3%. That calculates out to about 2 - 3mpg.
But in a lot of the forums, people complain about loosing 4 Ė 5mpg with E10, E15, or ďwinter blendsĒ of gas.
I also read a post that said the older ownerís manuals recommend 87 Octane with E10 or E15.
Cross winds, reportedly, will reduce mpgs.
AC will definitely cost you 4 Ė 5mpg. AC costs you more mpg at lower speeds because you canít glide as far. The higher the fan speed, the more mpg you will loose.
On the other hand, you do want to run some AC if it is hot because the EV fan uses cabin air to cool the battery. If the battery runs too hot or too cold, it will affect the mpg.
One other thing is Iíve seen some posts that say, give the hybrid system 6 months Ė 10,000 miles of break-in time. Some people have a 10% - 15% increase in mpgs once the hybrid system is broken in. Most of the impact seems to occur in the first 2,000 miles.
I started off with around 40mpg on my first drive home. I got up to 58mpg. Now that summer has finally hit here and I need my AC, Iím down to 52mpg.
Iím guessing my commute is a strange one to you all. In the summer, in the morning, its usually less than 70F, and Iím driving 90% downhill all the way to the office. (I live in a box canyon and my office is in one of the lowest parts of the valley.) In the summer, in the afternoon, it will be mid 90Fs Ė mid 100Fs and 90% uphill all the way back.
So on my way in, Iíll average 75mpg-ish and on the way home I average 30mpg-ish.
One change I made on my commute was to use an expressway instead of the foothill highway. Traffic is worst on the expressway and thereís a stoplight every half mile. But in rush hour, traffic speed is better for gliding. On the foothill highway, I lost a lot of mpgs on the uphills, too much for me to make up by coasting on the downhills. The expressway has flatter grades, so I donít loose as much mpg on the uphills.
My wife and i LUV our 2009
My wife and i LUV our 2009 Prius! second one we got. first one was rear-ended 60+mph on the freeway while stopped in traffic. and it did a awesome job protecting her. had to be totaled but what car would survive a collision like that?
we get over 41 mpg easy, with ac on (sacramento area). when i drive the mpg does increase to 46-50+ mpg (wife drives it a bit fast).
bottom line: we are way happy with the mpg and the way it drives; it's quick when we need to pass or get on the freeway; no problems with it. GREAT CAR!
Prior to the trip we're on
Prior to the trip we're on we regularly got about 48mpg on our 2006 prius. We traveled about 3000 miles with 2 surfboards and a cargo carrier on the roof. We expected to get less mileage due to extra weight , freeway speeds and wind resistance. We averaged about 30 mpg. However, now that we have removed the surfboards and the rooftop cargo carrier, mileage is still hovering around 31 mpg (we're still on our first tank of gas without the load). The car seems to run fine. Is there something wrong with the car, or does the car's computer have to learn to drive efficiently again? Any insight would be appreciated.
yeah im getting even less
yeah im getting even less with my used 2009 prius and it already had 36,000 miles on it there something not right with this car and im sure the dealer is blowing smoke up your ass