One thing about my Alpha is that the gas mileage has been great! I now have 4400 miles on the odometer, and have been doing the calculations for gas mileage with every fill up. This is what I have had:

Based on using 18.7 gallons and traveling 320 miles. That gives me gas mileage in the range of 17.1mpg. That is a combo of driving highway and idling in the city.

I've been very pleased with what I'm receiving for mileage......now if everything else gets fixed......maybe I'll get even better mileage!!!

 

WOW! I will be very happy if I can get that out of my alpha! I haven't even gone through the first tank yet so I have no idea what I am getting. Problem is the 35"s come in 2 days so I'm pretty sure I can kiss any chance of 17mpg goodbye

 

yeah...the 35's will do that......you'll probably be in the area of the low teens.....
I'm really not sure, but someone else my chime in.

 

The only time I figured mine I came up with 14.7 MPG with 35's.

If I'm thinking right, it should actually be a little more than this as I travelled further than my odometer read.

I'm installing a Scanguage this weekend and will report back what I find.

I then plan to see how some Watter Wetter effects my coolant temps, and I may try those "iffy" new Pulse sparkplugs to see if I can eek out a few more MPG's.

 

I don't have an alpha but I did put 35's on and my mileage went from a little over 17 to around 15.
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I think 17 mpg is really great! You still have the original tires (265/75R16) on your truck right? I put 33’s on my truck (BFG/AT 295/75R16) and lost some mpg so the 35’s will indeed make a difference. The best I’ve ever done was 14 mpg city. I’ve not yet checked it for highway mileage. Of course I set my cruise for 77mph so I don’t expect to do as well as if I drove at 60 mph. There can be a wide range of mpg depending on driving style and options on a truck.

The increase in tire size does effect the odometer reading so I used my GPS to record my miles driven when I calculated my mpg and it also says you are traveling at a slower rate of speed then you actually are.

One thing to remember here is the EPA fuel estimates are average estimates as stated on your window sticker.

13 mpg city (average) - the expected range for most drivers is 10 to 16 mpg.
16 mpg highway (average) - the expected range for most drivers is 13 to 19 mpg.

It also states Combined Fuel Economy as 14 mpg and says “Your actual mileage will vary depending on how you drive and maintain your vehicle.�

 

Yeah I have the original 285/75/16's on.....

 

I don't have GPS in the truck yet, but I put the same tires on that you have Alpha. And everytime that I pass one of those signs that post your speed, it is dead on. WTH?

Plan on putting GPS in it but have to wait as I was told to wait and see if I get one for my Bday, only problem is that isn't until July!!

 

We aren't getting anywhere near that type of mileage with our H3 Alpha. We have the Adventure package so we have the 295 tires. Average is probably 14.5 mpg

 

I-5 mine went from 18.6 to 16.9 with the larger tires.

CWO