Cruise Control VS. My Size Thirteen

[dfran1]

I just want to bring up to your attention (if you do not realize this already, or to remind others) that you have the 17" wheels.

I had a 2005 Prius and now 2 2010's, one is a IV and the other a V.
The IV gets around 55 m.p.g. easily, but the V gets about ~51-52 m.p.g. like you do and it is very hard to keep 52 with the 17" tires (especially driving highway)!

Tuesday night I drove to my dealers new Toyota dealer invitation meeting and achieved 55 m.p.g. to the dealer, but that was killed on the way home (just way too hard to keep that 55 m.p.g. with the 17" tires, and we wanted to get home) and all I achieved was my 52 m.p.g. when I arrived back home.

I spoke with my friend that has a jetta TDI and he only gets ~38 m.p.g. now (he has the 17" tires and keeps them at 50 psi) so I am happy with what I get but wish the 17" tires would roll better, I am going to try 50 psi today in them and see if any difference.

Best of luck
Don

[bwilson4web]

Originally Posted by davidiiiii

. . .
I drive 40k - 50k miles a year with about 75% being highway. . . .

Seeing how I just purchased my car, I haven't really had enough time to do this study myself, and the temps have been fluctuating from the 50's to 20's daily. . . .

With that many miles per year, you are in an excellent position to make your own "MPH vs MPG" chart. Just keep a handy pad of paper and start recording segments:

• miles
• MPG (indicated)
• average speed
• temperature
• start-stop locations (optional)

Load the data into a spreadsheet and then you can understand where this data comes from:


Within a week, you'll have enough information to see the patterns. Then adjust and see what happens.

Bob Wilson

[davidiiiii]

Thanks for the replies everyone. I lost sight of the fact I am using 17" wheels (don't regret that decision for a second) and that I also have 100-200lbs of supplies for work in my trunk 24 hours a day.

Keeping that in mind, and the fact this in my first hybrid (Subaru STI + VW R32 last two cars), I am very proud of my results so far. Cant wait to drive in above freezing temps to see if it improves. With everyone's help and advice, it will only improve from here.