Road Trip Fuel Economy - 2014 Chevrolet Silverado 1500 Z71 LT Crew Long-Term Road Test

2014 Chevrolet Silverado 1500 Z71 LT Crew Long-Term Road Test

2014 Chevrolet Silverado: Road Trip Fuel Economy

February 10, 2014

2014 Chevrolet Silverado

Recently, I drove our long-term 2014 Chevrolet Silverado from Los Angeles to Phoenix and back. The route itself is quite uninteresting. It comprises one straight, elevation-changeless highway, Interstate 10, for nearly all of the 825 miles.

Traffic was light, so I was able to make good time and keep the cruise locked for the majority of the miles, cruising at the speed of traffic for nearly the entire trip. Despite this the Silverado was still switching into fuel-saving four-cylinder mode with some regularity. Nice.

When all was said and done the big truck had netted 19.6 mpg. While this is (predictably) lower than its EPA highway rating, it's actually a touch higher than its combined EPA rating of 19 mpg. I consider this result a success, considering the truck is facing an uphill aerodynamic battle at these real-world freeway velocities. Remember, drag increases with the square of velocity.

Jason Kavanagh, Engineering Editor


  • quadricycle quadricycle Posts:

    It sure isn't outstanding, but getting ~20mpg on the highway with a V8 full size truck is pretty good. These trucks still have a way to go in this department, but it is nice to see improvement. Oh, by the way, thanks for the article 'Anonymous'.

  • jeepsrt jeepsrt Posts:

    I would think it would have done better, I get 17 mpg in my SuperCrew Raptor going from Colorado Springs to Breckenridge which is all mountain driving.

  • quadricycle quadricycle Posts:

    @jeepsrt: That's still a 15% improvement. I really think that we're going to have to come away from the massive grill on trucks to open up better highway economy. As for the engines, they'll continue to evolve, albeit slowly. In this market, reliability a

  • jeepsrt jeepsrt Posts:

    @quadricycle: True but this truck has a much smaller V8, cylinder deactivation, lower weight and is 2WD with much smaller tires than the Raptor's 35" tires.

  • quadricycle quadricycle Posts:

    @jeepsrt again: Ah yes, good points. You would think there would be more improvement in that case. The reason, I would say, is that one of the largest factors at highway speeds is aerodynamics, where both trucks aren't that different (except for your tire

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