About the Toyota Yaris Hybrid (In US Prius C)

[Jyden]

My milage is not impressive at all considering the car. But is due to a very irrattic drive pattern, with lots of short trips, and then some long ones. Many on a rather cold engine. (Why perserving heat is of importance to me).
Our cilmate is cold half of the year, which dosent help either.
In a warmer climate, with a more consistent drive pattern (Daily commuting and longer distance) it would'nt be a problim getting 55 - 60 mpg avagage in the Yaris hybrid with some modding and some hypermiling.
Here the Yaris was the best economy car I could get my hands on everything considered.
I think it's not possible to compare cars unless drivepattern and climate is about the same. Too many variables....

[gone-ot]

Quoting the Real Estate broker's mantra: "It's all about location, location, location"...and the..."weather, weather, weather."

[Jyden]

Had a tank with some longer trips, and milage surpassed 54 mpg. So getting closer to the 55 mpg target.
Summertires are going on within a week or two. Hope they are better than the winter ones. W'll have to see....

As far as modding goes, there no plans at the moment to add furter mods. The thermostat for the radiator opens at 90 deg.C, and I havent had the electric fan on yet, so before closing up more of the grill, I would like to find out when the fan kicks in.

For furter modding, I think I've got to look to the underbody and to the rear end. In the front the mirrors and the viper are also possible target for improvements. Just can't deside....

[Jyden]

Summertires due for mounting om monday. FE hovering around the 53 - 54 MPG mark, at the moment.

Currently No. 14 om the hybrid list. In 2 months or so I'll climb the list with one or two positions once the bad tanks from the running in period is longer away in time. Biggest competitor will be the plug in Prius (PIP). But I'll start to breathe fuel wapors down the necks of those Insight drivers...

Wonder why so few hybrid owners keep a fuel log here? Would be so much more informative if more listed their fuelings here.

Car still drive like a dream.

Not shure what mod to do next. Still waiting for the summer tires to go on and break in, and some warmer wheater, so I can see how engine temps and fan behave in warmer conditions. Dont dare to block more grill before that....

Underside of car has to be looked at monday when tires get changed, and the car is on the garage lift.

[RedDevil]

Good job! I saw your rates climb. Won't be long before you have the Devil on your tail (instead of just ahead)
Will try to make it hard though

[Jyden]

I shall do my very best...
But due to work my drive pattern are very different from month to month. Some times lots of small trips, some time longer trips. Together with living in a cooler climate, it makes it more difficult.

[Jyden]

To my big surpirse the factory mounted summer tires for the Yaris turned out to be Dunlop Sp sport fastresponce in 175/65 R15.

As it is an ECO car with good milage as a selling point, I was surprised to see those and not for instance Ecopias or Energysavers from Michelin, og Conto ECO contacts etc..

Does anybody know of the Dunlop's roling resistance and ECO capabilities?

As far as I can find it only listed as "moderate" in test with regards to better milage?

Otherwise seems to get very good reviews...

Well - gotta wear them out before getting some good LLR tires. Shure can't pay to change before they are worn out.

Starting with 3 Bar / 44,5 PSI and I'll see how they fare FE wise... Hope they are better than the Kleber wintertires that are on on the shelf at the dealers depo.

[Cobb]

Well, I use to track my mpg, but once I exceeded 103 mpg I decided whats the point.

The longer the trip the better the mpg. I use to commute anywhere from 43-300 miles a day. I use to drive 150 miles twice a day. Do that with no ac and around 60mph and you just watch the mpg rack up. I also use to buy gas in the county vs city which had less ethanol and more mpg.

Cant help you with tires, Im sold on traction vs mpg. I rather have to slow down to merge into traffic vs speed up.

[Jyden]

Summer finally came here in may and milage has improved steadely with rising temps. I've had a lot of driving lately with some longer trips on country main roads, and it shows.
Last tank gave 4.19 liter to a 100 km's.
Long way to get to the 4.0 L to a 100 km goal, and it will not happen on theese tires. Simply too much rolling resistance.
I added more presure to the front, and that helped at bit. I'm now running 3.2 bar front, and 3.0 bar rear.
Hoping for a long warm summer.
As of today 90 day FE avarage is at 53.99 Mpg, so hopefully I'll be able to break 25 km/liter og 58.8 mpg a lest a tankfull once in a while.

[Daox]

Nice work. Keep at it and I'd bet you'll break 60 mpg this summer yet.