Hyundai Sonata 2006 V6 Mileage Statistics

Here are my fuel consumption records so far. Columns may not align
depending upon the font. Copy the text and paste it into a text editor
(Notepad) for easy viewing.

Mostly city driving with just the driver and with way too many signal
lights. Vehicle was purchased in mid-December.

Date Gal Price Trip Meter Odometer Mileage
02/12/2006 15.38 2.219 296.8 1295 19.3
02/26/2006 14.02 2.059 272.3 1567 19.4
03/11/2006 16.86 2.239 369.9 1937 21.9
04/01/2006 16.41 2.579 341.4 2279 20.8
04/14/2006 13.53 2.839 290.5 2569 21.5
04/15/2006 15.38 2.779 400.0 2969 26.0 <- All highway
04/25/2006 15.50 2.839 347.0 3316 22.4
05/05/2006 11.34 2.849 248.8 3566 21.9

 

Those seem pretty consistant with what I got at first too. I will tell you
that around 5,000 miles my MPG went up considerably. I now get on average
24-26 MPG on the highway AND/OR the city streets

 

that's about what I am getting, Just got to Cgicago with 5000 miles on
odo. averaged 31.6 MPH for first 90 miles to Hannibal MO driving 65MPH.
From Hannibal to Chicago averaged 26 MPH driving 75 MPH with strong north
wind (HeadWind..) NOw have 5000 miles on it and brake rotor still scoring
and sweaking....
even with my foot off the brakes. Hyundayu tech: Hope my dealer will fix
this when i get back to Calif...

 

What time of year did this occur and in what area? My mileage took a
huge jump also, but I'm pretty sure it coincided with the seasonal
switch from winter to summer gas blend. I'll know for sure this coming
winter...


Matt

 

Do you know what your local blend is? Around here (NJ) we blend with
Ethanol in the summer. Gas mileage seems to drop a bit with Ethanol. Up
until last year we used MTBE to blend, but that is banned now. MTBE seemed
to increase mileage a bit in studies anyway.

Eric

 

No, unfortunately, I don't know what the difference in blends are. I
just know they use a formulation in the winter than allows easier
starting in subzero weather. I think the blend has a higher RVP so that
it is more volatile at low temps, but I don't know what the chemistry of
the winter blend is or summer blend either.


Matt

 

Not sure of the blend. Mine jumped after 5K bu it was still the same
"season" (winter). We have now switched to a Summer blend but I am still
getting the same mileage