Wondering about EV+HV≠Trip

I just filled up the "new" 2013 PiP for the first time. I have to say, it was pretty satisfying.

But I came away with a question and haven't been able to find the answer here or in the manual. I reset everything when I filled the tank the day I bought it (three weeks ago tomorrow). When I filled up today, the EV miles said "316" and the HV miles said "369." The trip meter read "705." What mode was I in during those other 20 miles that were not EV or HV?

At any rate, I calculate a cost of $2.89 cents per 100 miles with my gas and electric prices. Actually, it's less than that because about a third of the electricity was free at work.

Raw MPG from 7.706 gal. at the pump and odometer came to 91.5 MPG. Looks like I could have easily gone another 75-100 miles. Call me a satisfied customer!

 

I've been noticing right along as I've gone through this tank that they didn't add up. Maybe I didn't get everything reset at the same time? I'll see what happens on this fresh tank.

Meanwhile, I did a quick calculation comparing cost per 100 miles with this vs. the '05 that was averaging about 48 mpg. It would have been $33.05 for those 705 miles or $4.69 per 100 miles. It should save about $300 or so per year. The wife says it'll take a long time for that to pay back the cost of the car, but then again, the car is 8 years newer. No idea how you factor that in, but it is significant.

 

Thanks, Bisco. I may do that. If it's the sticky I think it is, I kind of set up my own spreadsheet inspired by that one. There were a couple things I wanted to track that weren't on there. I'll pop over there now.

 

Nothing super significant. I made mine like the picture below. I eliminated the liter/100km, which I don't need. And added a cell to enter cost per gallon to put into the formulas and then a cell to calculate cost per 100 miles and cost of that tank.

 

So for the Google Docs sheet, I gather that I would enter my data on sheet one under the yellow example area?

 

I noticed that. I just entered mine. Hope I did it right. Here goes! Thanks for the invite.

 

Also, Bisco, my personal sheet has my own electric cost, which is lower than the Google Doc one. So, I think I'll try to do both so I can help with the stats for everyone as well as track my own costs.

 

Isn't interesting that Toyota only sold the plug in basically in the northeast and California -- two places with some of the most expensive electricity in the country?

 

If what I read is accurate, the power at our house comes from natural gas. We have a small house, so don't use enough electricity to get into a higher price bracket. I sure hope this car doesn't put us up there!!

 

Maybe because we're so close by ship from TX and LA here on the west coast of FL?