Did anyone notice a reduction in MPG as a result of V13.2
We were getting about 28 to 30 MPG on the interstate, now we are down to 21.
All else went well except the upgrade took 9 hrs.
Still In Love.

 

I have noticed this. Also the milege estimate is no longer accurate.

 

Welcome aboard, possum !

When you get a software update your car need to learn and adopt your driving style again. All those settings get erased during the update.
So, driving your car for one or two weeks (depending on how much you drive it) should solve this problem!

 

Has anyone actually calculated the mileage by taking the mileage driven between refueling and dividing it by the amount of fuel so as to compare to the mileage indicated in the trip computer?? The results may indicate that the trip computer is not totally accurate so any mileage changes are not solely the result of a software upgrade.

 

Cold weather can lead to increased fuel consumption too.

But right after a software update it is the cars normal behaviour. I had the same and after a little bit of driving around everything is fine again.

 

I do that every tank and compute the average for actual and the OBC. I am a little behind in getting all the info in the spreadsheet, but at 8200 miles it was actual 21.56 mpg and OBC 22.48. The OBC is generally about 4% over.

 

Also keep in mind that there is a calibration factor that may have been affected by the software upgrade.
If after a few tanks the indicated MPG is still way off the actual, then you can get into the hidden menu and change this factor up or down accordingly.

Streak