On a recent trip I discovered the setting for the continuous trip data. Mine goes back for 229 hours of driving!

I was surprised to see that my long term average mpg is 18.6 (in a modified CTT )





Post a pic of yours! (hopefully better than mine since mine was taken with a cell phone driving across Nebraska )

 

I'm impressed that your cell phone drove across Nebraska (I can understand how the boredom might have triggered this photo.. lotta corn eh?)

 

...it was for a funeral.......about the only reason I would ever drive across Nebraska.

Kinda funny...odd....related thing.

I got to the funeral in a town of about 200 people. Started talking to the daughter of the deceased (she is in her mid 40s?). Once the initial unpleasantries were said she asked "so.....did you bring the Cayenne Turbo?"

It was kinda funny watching some of the people their walk around the Cayenne checking it out. (about the only form of entertainment since neither my phone or iPad had service)

 

I've never looked at the continuous mileage function. I'll have to check that out.

One thing I've noticed though is that the computer is very optimistic in the way it measures mileage compared to the old fashioned way of actually doing the math. On our last tank of gas, the mileage computer showed 17.1 mpg. When I divided actual miles driven by actual fuel used, it was 15.0 mpg. That's a pretty big difference!

 

Mine has proven to be pretty accurate. We did a PCA TSD rally a few years ago with the CTT and took 2nd place. The key is accuracy and our mileage was dead on. The gas has pretty consistently calculated out accurate with those tires on it too.

So maybe it's just a tire brand/size/setting offset type thing. I'm sure mine is off when I have the 22s on, but in theory it would read on the low side not high.