Fleets switching their tractors to 6x2 axle configurations could realize a 2.5% fuel reduction, among other benefits. Since the original Confidence Report on 6x2 axles issued in January 2003 , 6x2 adoption among North America long-haul fleet has increased from approximately 2% to 4–5% in 2016.

However, many fleets still view them as a niche offering suited for the southern region of the U.S.

Factors that have contributed to the limited adoption of 6x2 axles include: low fuel prices, higher tire wear, driver perception, residual value, and improved efficiency of 6x4 axles.

However there is reason for optimism with 6x2 technology. Through a combination of best practices and adoption of complementary technologies, fleets have found that 6x2 axles work for their application and are benefitting from the improved fuel consumption.

One promising new development is 6x2 tandem axles with liftable pusher axles.

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Video created by James Brown Media

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