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The new GM twins are starting to arrive at dealerships and while the outside looks similar to previous models, the MPG improvement is quite a big “wow” factor. How will the full-size market respond to this potential game changer? Probably not a lot. Here’s why.

2014 GM Trucks With 5.3L V-8 Get 23 MPG  - Game Changer?

The new GM Twins have arrived with 23 MPG highway in the 5.3L V-8. Is this a game changer for the full-size truck market?

The full-size truck market is going through a dramatic change. The items that used to matter are being replaced with fuel economy and drive comfort. Huh? Yep, it seems the sentiment that “its a truck” of yesteryear is gone.

The 2014 GM twins of the GMC Sierra and Chevy Silverado now deliver 23 MPG highway (4×2) which is a full 2 MPG better than the 2013 model. How big is this number? This translates into about an average savings of $2k on gasoline between model years according to That is a big number and quite a bit of savings between model years.

Having a vehicle obtain 23 MPG is huge for GM as it tries to rebuild its brand and recoup lost sales since the recession and subsequent bailout. Recently, Ram has been working on taking that market share with its brand new 1500 that gets 23 MPG highway. Now, GM has virtually the same specs and can directly compete with them. Plus, GM doesn’t have the quality concerns plaguing its brand like Ram does.

What about the perennial top-selling Ford F-series trucks and the EcoBoost? They are scrambling. The Ford F-150 with EcoBoost is currently rated at 21 MPG highway ($2k more in fuel costs).

Real-World Fuel Economy

Another big deal with these new fuel economy numbers from GM is that they are so far holding up to scrutiny. Like the towing claims, fuel economy EPA claims are often laughable. Most often, owners don’t come close to the same fuel economy numbers on the sticker as in real life. The GM twins are actually doing that. recently put them to the test and they actually produced the fuel economy numbers they claim they do.

How is GM doing it?

What makes the 2014 trucks so special versus the 2013? It is lots of things like the new aluminum-based engines that have direct injection, cylinder deactivation, and continuously variable valve timing. They are also using a few aerodynamic tweaks and low-rolling-resistance tires. All of these factors along with a drop in curb weight depending on setup translate into fuel savings.

It is certainly to early to say whether or not the GM twins are a game changer, it is safe to say that a new benchmark has been set.It remains to be seen how the other makers respond especially those that are seemingly lagging behind like Toyota and Nissan. But, one thing is sure. These new full-size trucks aren’t ¬†your grandparent’s pickup.


About the author: Tim Esterdahl


Tim is a married father of three living in Western Nebraska. He is the editor and contributor to several automotive sites and is becoming an influential automotive journalist. He spends a lot of time reading, writing and talking cars/trucks with fans, insiders and manufacture reps. When he isn't talking about cars, he is usually out playing golf - a never ending obsession to see how far the little white ball will fly.


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