Recently purchased a 2014 Navigator Base 4WD. After a decent amount of research, I settled on the Navigator for it’s advanced interior features and towing capacity, despite the slightly degraded fuel economy. So, the “advertised” MPG in the Navigator brochure for 2014 is 13-City, 18-Highway and 15-Combined. I expected to be within a mile or so of these numbers. We are nowhere near them! I’m getting about 11mpg no matter what I do. This would be great with a travel trailer, but then, I get about 8 @ 55mph. I don’t live in a mountainous area. I’m only 3 miles from SE Kansas, so it’s FLAT here.
Checked with odometer and very closely matches the displayed average.
Is this normal?
I have spoken to a couple of people who have had Navigators in the past, and they thought they averaged about 16mpg, but I’m not sure how accurate that is, as none drive one currently.
Something must be causing this. I also have an ‘02 Avalanche that advertised 13/17mpg on the window sticker, & it does just about that to this day, so this is frustrating to me.
Any help greatly appreciated!