Measuring Alltrack Highway MPG – Background
This may be overdoing a simple Alltrack highway MPG report, but here it is anyway. This route I’ve driven well over a hundred times. The outbound (from Denver) leg is always worse on fuel economy than the inbound leg.
Summary: my new Golf Alltrack got 41.3 MPG on a 54-mile highway run.
It’s almost certainly the elevation change: Denver is 5280 feet above sea level, Castle Rock is 6224 feet above sea level. That’s a 147:1 ratio when computing the angle, given distance (28 miles on I-25) and height (1000 feet) = .34° incline.
There might be prevailing winds working on this also, I don’t know. It’s routine to get worse economy going to Castle Rock, whatever the case. In my Volvo 850 T5, I’d typically get 27 mpg going out, and 34 mpg coming back.
Golf Alltrack Highway MPG – Route and Distance
Here’s the Denver-Castle Rock route in Google Maps. It’s 57 miles round trip.
Alltrack Highway Economy – Methodology
- I press the MPG reset button after my Alltrack has gotten up to speed on the highway, after the entrance ramp. This cuts out variables.
- I don’t hypermile – no drafting, no turning the engine off (which to me has always seemed incredibly dangerous). Just normal driving. I kept the Alltrack in 6th gear the entire trip.
- My average speed is a few ticks over the posted limit… which ranges from 60 to 75 MPH. I didn’t do a speed run, nor was I a right-lane squatter.
- The weather was mild. There was no precipitation or strong winds.
- The load was just me, plus around 20 pounds of miscellaneous stuff in the car. Zero passengers.
- Fuel octane was premium, 91 octane.
I’m very pleased! I thought I could flirt with 40 MPG before I bought my Alltrack. Then the first week brought fairly dismal fuel economy numbers, and my 40 MPG dream faded. But it turns out those early numbers were engine break-in numbers, and now that I’ve crossed 1000 miles, fuel economy is rising.