Agreed, the pre 2007 engines get 20-21 mpg, but not the V-6. I am fully aware of the mileage on pre 2007 Sprinters.
You might be a little low on your fuel mileages there David. Of course it will vary by driver ...
You've just had two people (geo and Charles) that own and drive post '06 Sprinters, state that they are getting 20 or better (up to 25 in geo's case) - so are they just making this up ?
Charles: Ever try driving it at 55 and see what you would get ?
And as far as '06 and earlier, I have consistently gotten 24 to 26 mpg on my '06 long and tall Sprinter 2500 - even loaded. And I've hit over 27 a few times. But I do drive fairly conservatively (55 to 63 mph and light on the pedal) I think OVM has mentioned he is seeing similar numbers.
I have a friend with the same year and model - awhile back we were discussing strategies to keep down costs and one of them was driving slower when you have the time on the load.
He called me the other day and said "You ain't gonna believe this .... I just hit 29 mpg on this load .... I drove it all the way at 50 mph." (Obviously, not always practical to do this ....)
Of course, that's all a bit moot at this point because you can't get the L5 in the Sprinter anymore. I would agree that it probably wasn't real smart on Chrysler's part to go with an engine that got worse fuel mileage.
Like Charles said, you can roll your own on the conversion package and save considerable. Some folks won't want to do that and will spend the $10K on the expediter conversion package. All I can say is they are willing to dig a little deeper into their pockets than I would be, considering what you get for that $10K.
I built my "conversion package" (sleeper bunk and desk in place of passenger seat) from 3/4" cabinet grade oak plywood I got at Carter Lumber for less than $100. I took them a cut list based on my design with all the cuts laid out for them to do when I bought the wood - all I had to do was assemble and install it (and apply the 4 coats of polyurethane.
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I certainly have less than $750 in the bunk/desk setup (including a $265 custom-made mattress) and probably less than $500. But then I saved enough by doing it myself that I could afford some other stuff that I wanted to make life on the road a little more bearable.