Mileage

Hello Dick and welcome to Priuschat

Your question is a good one and has been discussed on several threads at great length.

This thread should address your concerns pretty well.
http://priuschat.com/index.php?showtopic=11811&hl=

The search feature will help you locate other ones.

Briefly, winter takes a toll on the mpg of all internal combustion engines-- including your Tercel.
You don't say where you are from, but I assume New Hampshire from your screen name? If so, the combined effects of winter are probably the basic reason you are losing mpg.

There are some very bright and helpful people on here who are generous with their knowledge.

 

Seasonal cycles are normal... and have been for decades, long before hybrids. Only people didn't notice/realize it in the past. After all, gas was cheap back then.

Anywho, expect to see this cycle annually:

[Broken External Image]:http://john1701a.com/prius/images/data/Prius-2004_Month-MPG-Average_Graph_Lifetime-mini.gif

It's the overall average that truly matters, which is well above what the non-hybrids can deliver. Detail available on this webpage.

 

Yeah, what I said "There are some very bright and helpful people on here who are generous with their knowledge."

Thanks John

 

One reason we notice more in this car than others (yes, this has happened on all the cars I've owned) is that we're more obsessed with the mileage in this car and watch it like a hawk.

 

Check you tire pressure and oil level before you do anything else.

 

Your Tercel gets 40 MPG both in August and in January?

 

The prius will be sensitive to (or more obvious to) fuel robbing conditions than other cars, as other cars usually have those robbing conditions all the time. Example: traffic signals with no heat demand. Prius: no usage. Other cars, idle usage.
Traffic signals with heat demand: Prius: idle usage if necessary. Other cars: idle usage as before.

 

If you track your mileage on your Tercel and you actually do historically get 40 mpg all year I will not doubt you on that one. Please post a spreadsheet or other long term data covering many winters if you feel so inclined.

However EPA mileage numbers are not practically achievable by a significant number of buyers nationwide. Geography, climate conditions, commute times and distances all effect mileage. During the winter, we all take a hit. I know I have. But I expect it to return in the summer.

However the Prius is much more vehicle than a Tercel. I didn't buy it just because it was a hybrid, I bought it because it was a well equipped package for a very competitive price. People have read this one before so it is like listening to a broken record. How many cars out there have digital dash, historical trip computer, touch screen control and auto climate starting at $21k. None. That is why this is such a good deal for the price you paid. Luxury car features without the luxury car price and excellent FE to boot.

Lower FE is part and parcel for winter driving. Just think the Prius is still doing better than any other car out there and you have a really nice car, too.