GM Duramax I6 wins the best in class fuel economy after 2020 EcoDiesel numbers announced.

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BoostN

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It is pretty funny how Ram talked up a big game, but then did end up "losing". But, 1-2 MPG is not a ton.. Long live these half-ton diesel wars, we (the consumer) will benefit from it!
 

1shadowsabre

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It is pretty funny how Ram talked up a big game, but then did end up "losing". But, 1-2 MPG is not a ton.. Long live these half-ton diesel wars, we (the consumer) will benefit from it!
That is a pretty good article but there sure are a lot of variables! Hard to keep it straight without a chart!
 

BoostN

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That is a pretty good article but there sure are a lot of variables! Hard to keep it straight without a chart!
Of course, I always take the EPA ratings as base line. The VW TDI was drastically better in fuel economy than the EPA ratings ever said..
 

AnywhereInTX

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Sep 19, 2019
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Most diesels outperform EPA numbers in my experience too. It's just another semi-unbiased set of numbers to judge a truck off of. I usually use the EPA numbers combined with TFL's "real world" testing numbers to formulate an opinion on fuel economy. TFL posted a video yesterday of the best and worst trucks by brand so you can see how options changed within a products lineup. The most interesting thing is the fairly large difference between the GMC and Chevrolet Sierra/1500 Duramax 4x2. I didn't realize that the Chevy offers such different rear end ratios that made a 4 MPG difference.
 
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