I drive like an asshole in my CX-50 turbo. Like, I’m usually doing 90-110mph in the early mornings. Lately with the winter blend, I’m averaging around 18-19mpg highway. In the evenings, I’m going with traffic 65-85mph and I’m averaging like 26-27mpg. Overall, I’m getting 23-24mpg.
If your route is 95% highway average 55mph, there is no way it’s that bad unless you left your car in sport mode or something. Like… sometimes I go for long drives to put the baby to sleep, and if i’m on the highway cruising at 55-60mph, I get 31-32mpg.
You could.
Run a radar detector, laser jammer, Waze for backup, company sponsored lawyer service on retainer, know the techniques for leap frogging and letting the person a mile down the road trigger any speed traps, mind your tire conditions and pressure, get a job with an early shift so you leave when no one else is on the road, and have a very very understanding wife.
But… that still doesn’t explain your terrible gas mileage. Have you tried going out on a weekend, find a long stretch of interstate, and set the cruise control at exactly 65mph for 1 hour, to see what your MPG’s are?