Jeff Epler's blog2015-01-02T13:55:16ZPhotos, electronics, cnc, and moreJeff Eplerjepler@unpythonic.netOne year in a Prius2015-01-02T13:55:16Z2015-01-02T13:55:16Zhttps://emergent.unpythonic.net/01420206916
We got our 2013 Prius just about a year ago, and I ran TRIP A without resetting
it for that whole first year. Here are the final numbers:
<p><img src="https://media.unpythonic.net/emergent-files/01420206916/mpg.jpg">
<p>For everyone not still suffering under the tyrrany of imperial measures,
44.4mpg is around 5.3l/100km and the distance driven is about 12000km.
<p>That means ...
<ul >
<li >260 hours total driving time</li>
<li >43 minutes driving time per day</li>
<li >21 average miles a day (33km)</li>
<li >170 gallons of fuel (640l)</li>
<li >2/3 gallon per hour of driving (2.4l/hour)</li></ul>
<p>Getting at 44.4mpg instead of the EPA combined fuel economy of 50mpg
means using 20 extra gallons of fuel over the course of the year, 13%
more than predicted.
<p>Overall we're happy with the Prius. It's much roomier than the car it
replaced and it has better fuel economy. However, I'm a bit sad we
didn't get closer to the EPA fuel economy.
<p>The main thing lowering the fuel economy is short winter drives. My
drive to and from work is just 2.5 miles per direction, and I often
drive a similar distance to and from lunch. In winter, that's too
little distance for the car to warm up to the point that it enters the
fuel-saving EV mode while stopped at lights. (this kind of driving is
even classified as "severe operating conditions" by Toyota: "Repeated
trips of less than 5 miles in temperatures below 32 degrees Fahrenheit")
<p>Our summertime fuel economy (also the time of year when we make long
driving trips on the highway) is closer to 48mpg.