Ram 3500 MPG test

Here's an empty mpg test where the same person tests his 2019 Ford against his new 2020 Powerstroke. He gets a 30% improvement (18.9 mpg) with the 2020, although his 2019 had 35's on it.
So, maybe, between the 2019 Ram getting a little poorer fuel economy then previous models and the 2020 Ford getting significantly better fuel economy .... maybe this TFL test is not too far off.
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