Prius (Gen 3) Fuel :: Daily Commute Is Below Average


Jun 6, 2013

I'm relatively new with my 2011 Prius. I've been averaging about 53.6 mpg, but I feel as if I can do better. I've set 54 mpg as this "magic number" that I'm aspiring to, but if I ever reach that, the number will probably rise to 55 and so on ... (As an aside, if I just set the cruise control while on the commute I'm about to describe, I get the same mileage as I do when I'm working on hypermiling, so I don't know if it's worth the effort with this route).

My daily commute is around 15 miles. About half of this is a hilly and curvy road. The PSL on that portion is 55 mph, and it is a two-lane (one lane in each direction) road. At least one of the hills are so steep that if I DWL, I'll lose between 15 to 20 mph from the bottom to the top; that's with the HSI "pegged" right before the power section of the line. I can maintain speed, or at least lose less, if I go into the power area. Additionally, there are several curves at the bottom of the hills where I must brake down to around 40 mph to safely negotiate the curve.

Finally, it is well-trafficked road as well, so, while observing the speed limit, I may have 10 cars piled up behind me, which makes me nervous.

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My commute is 43 miles one way. half of it is mixed city driving a mile of low speed out of my neighborhood to a 55 mph with two 2 mile 35 mph zones and then the second half is interstate.

I have been working on keeping the SOC high for the 55 mph so that i can most of the time slip in and out of high speed "stealth" mode. Usually with the MFD around 69-75? and not drop speed too quickly. maybe a mph per 2 miles depending on the grade.

I try the pulse and glide in the 35 mph zones. coast in, then glide as far as I can and pulse back up. I have been playing with a couple ways,

OPTION 1: use in electric only-takes longer and kills SOC.

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