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 > Suburban Diesel Fuel Mileage Test

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Gene K 2

USA

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Joined: 03/16/2021

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Posted: 03/26/21 12:53pm Link  |  Quote  |  Print  |  Notify Moderator

APT wrote:

$1k upcharge for the diesel on the Suburban is the lowest of any diesel in the US market today. I bet that option costs more in a few years. Also, resale and the driving experience of the diesel is different than the 5.3L. 4WD EPA estimates are 20mpg city, 26mpg highway. That's almost exactly the same as my Subaru Outback at 20/27. I cannot imaging getting 22mpg in a full sized SUV as a daily driver.

I had a diesel(gate) Passat. No mathematical analysis could justify the upcharge in that car. But I loved driving it for 80k miles which was better than almost every mid size 6-cyl car I had before (and my current Outback 3.6)..


Why? My old 5.9L 12V 5-spd Cummins 3/4 Ton Dodge Reg Cab weighed 5400 lb curb and averaged 21.5 mpg with or without the boat in town or out. The only thing that would drop it was a high frontal area trailer. I wouldn't think the Suburban was that much heavier and they have had 25 years to offset the emissions rules losses and it runs a lot smaller engine and passenger tires.

IdaD

Idaho

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Joined: 08/06/2014

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Posted: 03/26/21 01:40pm Link  |  Quote  |  Print  |  Notify Moderator

The cost arguments about gas vs diesel are generally stupid at a consumer level. Sometimes one is a little cheaper, sometimes the other. Generally speaking when you throw all factors into play there's not enough of a cost difference to matter relative to total ownership cost. There sure isn't to me, anyway.

That's why I'm not really sold on the baby diesels. They're more complicated and you've got more emission **** to deal with, yet they don't perform any better. The huge advantage of the Cummins, D-Max and Powerstroke is they're not turds like their gas counterparts.


2015 Cummins Ram 4wd CC/SB


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