TM is manually reset via the stalk. TA resets automatically after the car sits idle for four hours.

 

Thanks Zaxxon!

 

Where can you get "life of car" mpg reading?

 

You cannot, to my knowledge. You'd have to just never reset TM and eventually that'd begin to approximate lifetime.

 

This seems really odd. I've not had a hybrid that didn't have a cumulative mpg readout somewhere for the life of car.

 

My TM resets automatically after a while. Not sure if it is a glitch or not, but somewhere around 1000 miles my TM usually resets on its own.

 

Yes, the intent of TA is to reflect your recent mpg. Audi has this as well. I really wish there was a way to display your short and long term mpg as well as recent drive time on the dash without having to go to the menus. I love that you can display all this information on the dash as a default on my Audi.

 

Is the MPG presented in the VOC smartphone app not the lifetime MPG? What about the MPG in the Driver Performance Sensus app?

 

VOC Dashboard is TM, Driver Performance is TA. Though I suppose you could export all your driving journal entries from VOC and use that to get a lifetime value.

 

Actually, VOC only tracks your last 100 days, so that's the extent of what you could export, unless you export every 90 days or something and maintain the exported files external to VOC.

 

Thanks for this idea. Just tried it. I think there may be some rounding errors in the exported data. I've got a T8 and with the exported data I'm calculating 52.4 mpg vs. the VOC dashboard which reports 39.8 mpg.

I've only had the car for about two weeks so the TM has never been reset. I notice that for some trips where it reports <0.1 gallons used in the app, the corresponding row in the export lists 0.0. I know that for some of these the engine fired up for brief periods so 0.0 is misleading. I guess over time these rounding errors should even out and I can get a better idea of where I stand mpg-wise.

Regardless, very happy with the vehicle so far. Much more luxurious and much better mileage than my Chrysler Aspen Hybrid although I do miss the eighth seat.

 

I remember someone else posting about rounding errors in the VOC export back before I had ordered mine. It's weird because VOC itself clearly has the right data (otherwise you wouldn't see MPG numbers as precise as 172.4 MPG or whatever). They must just be using too few sig digits on the export or something.

 

Yeah, sounds about right. Interestingly, the delta between the first and last odometer readings matches the summed up trip distance data. So the rounding is evening out there. So perhaps the number I'm calculating is actually fairly accurate. If so, I'm even more impressed with the car than I was an hour ago.

 

Are you on Fuelly.com? I've had fun using that. Between my Fuelly readings and the electrical reporting on my JuiceBox, I have a pretty accurate view into efficiency.

 

Never heard of it. I'll take a look.

 

My car. There are simple ways for data entry, like texting Fuelly at the pump. Makes it a breeze to keep track without printing/saving receipts.

 

Well I just tried that. But I can't see my own car on the list...

http://www.fuelly.com/car/volvo/xc90/2017/tillsbury/531747

That's the link to my one, but when I look on the list of 2017 XC90s I don't see it there. It looks like I'm not doing particularly well Must try harder next fill...

Is there a public/private setting I need to be doing something with?

 

Well I just tried that. But I can't see my own car on the list...

You will see it after your third fuel up, as indicated here, under "Why isn't my car listed in the Browse Vehicles section of the site?"

 

My Lexus has one of the fuel meters reset automatically after you fill up. Love not having to reset it manually. Oh well. I'll get daily fuel millage numbers vs weekly/bi-weekly.

 

Nor did my 2007 Prius or 2013 Prius V. I can leave Trip B for the life of the car, but there is no actual 'lifetime' reading built-in.

 

My Lincoln Hybrids showed lifetime every time I turned the car off. I just got used to seeing it.