Fuel Consumption

[MikeSutton]

Hi all, I'm new to this forum.
Sorry but just posted this in the introductions section by mistake.
On a recent 500 mile round trip (motorway/fast A roads most of the way - so no PPF issues) to Suffolk from Lancashire my Stinger GDi returned 45 mpg on the trip down and only 28 on the return. Normally I get around 33 with driving I normally do around our local countryside but since the trip it's been around 24/25. I've done 4600 miles since last September when I bought the car new. It's going in to Kia next week but does anyone have any ideas on the problem or experienced something similar?

 

[Mike_TX]

First, GDI? That usually suggests non-turbo ... is it a turbo? 2.0 liter or 3.3?

Assuming you're talking about imperial gallons (1.20 U. S. gallon), your 45 mpg would equate to about 37-38 here, doable with the 2.0 liter I used to have. I haven't had my 3.3 long enough to test highway mileage, but others report less than that with the 3.3.

Now, as for the return trip mileage, was it uphill, or was there a strong headwind? That could explain it. Also, did you do a lot of hotfooting on the way back? That's pretty dismal mileage, so something was at play. Either that or you have some kind of malfunction, and hopefully your dealer can track it down.

 

[GenesisG70]

There are so many factors on fuel consumption, road condition, weather, how heavy your foot is, car load, fuel quality, etc. Mine gives me good MPG consistently 28 MPG when not pushed and commuting.