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Old 11-20-2012, 09:53 PM   #1
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Questions on Mercedes mileage and reliability

I am looking into possibly upgrading into a 2006 Forest River Charleston with the 330 Mercedes. I don't know alot about the Mercedes diesel. Just wondering what information is out there about the 330 Mercedes regarding mileage, torque ratings and reliability. I have read that it can be serviced by Detroit diesel dealers. Any comments?
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Old 11-20-2012, 10:22 PM   #2
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Fantastic engine... I have it in my 2008 Berkshire and love it... It has 1,100-1,200 lbs of torque which means it walks by cummins engines going up a steep grade... Honestly, it will roll down the highway....

I consistently average 10-14 mpg again which blows away comparable Cummings engines... I've got a buddy with a cummins that gets 8 mpg on a good day....
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Old 11-20-2012, 11:57 PM   #3
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Fantastic engine... I have it in my 2008 Berkshire and love it... It has 1,100-1,200 lbs of torque which means it walks by cummins engines going up a steep grade... Honestly, it will roll down the highway....

I consistently average 10-14 mpg again which blows away comparable Cummings engines... I've got a buddy with a cummins that gets 8 mpg on a good day....
a 330HP MB engine has 1000 lb torque and 10-14MPG??
[moderator edit]
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Old 11-21-2012, 07:54 AM   #4
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Click image for larger version

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Here is a pic of my dash computer on a recent trip showing 11.8 mph... On numerous other trips I've gotten 13.7 mpg..... Sorry if I miss-led on the torque but I was close....
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Old 11-21-2012, 09:10 AM   #5
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So, what are the correct torque ratings for a 2006 motor?
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Old 11-21-2012, 10:25 AM   #6
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So, what are the correct torque ratings for a 2006 motor?
as previously stated 3 posts ago 1000 lbs
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Old 11-21-2012, 10:29 AM   #7
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Attachment 29390

Here is a pic of my dash computer on a recent trip showing 11.8 mph... On numerous other trips I've gotten 13.7 mpg..... Sorry if I miss-led on the torque but I was close....
My 425 cummins 8.9 1250 torgue will pass u like your tied to a tree
I can get 11.8 and 12.8 MPG also on my factory ECM readout on flat roads at 55-60 MPH

but when I add in and calculate through mountain passes,loaded pulling toad the mileage drops to 8.5 and to me that real fuel mileage
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Old 11-21-2012, 11:21 AM   #8
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Rvrepairnut...


I said comparable engines - 425hp vs 330hp and 1250 vs 1000 lbs of torque don't compare....
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Old 11-21-2012, 12:02 PM   #9
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Have the Mercedes diesels had any reliability issues and are they still being made?
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Old 11-21-2012, 12:04 PM   #10
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Rvrepairnut...


I said comparable engines - 425hp vs 330hp and 1250 vs 1000 lbs of torque don't compare....
actually what u said was:
It has 1,100-1,200 lbs of torque which means it walks by cummins engines going up a steep grade.( i dont see where u said comparable)

My friend has the MB engine in his Alpha and when I had my previous
40 ft AB with 8.3 350HP cummins he could not even come close to passing me on a climb.He did get better fuel mileage I will admit
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Old 11-21-2012, 12:20 PM   #11
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My 72 Travco with a 413 will blow you guys off the road, and if it wont, it will smoke you out and leave you gasping for air



for aall you dry moderators, this is a joke
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Old 11-21-2012, 12:29 PM   #12
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one of my questions would be, what do the parts cost ?? cummins are not bad priced.. cat is usually higher. where is mercedes in the mix. i see mercedes is handeled by detroit diesel. 7.2 l 330 hp 1000 ft lbs torque are some good numbers.
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Old 11-21-2012, 12:38 PM   #13
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one of my questions would be, what do the parts cost ?? cummins are not bad priced.. cat is usually higher. where is mercedes in the mix. i see mercedes is handeled by detroit diesel. 7.2 l 330 hp 1000 ft lbs torque are some good numbers.
good numbers for a 34-38 ft no or two slide unit
very very poor for 40ft 4 slide type unit
My friend has had Zero problems with his MB engine and thinks its fine
decent fue lmileage power is acceptable in his 40 alphas 3 slide unit
but like he says every time we go somewhere he wishes he had the
ISL like I have now.
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Old 11-21-2012, 05:34 PM   #14
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We have the Mercedes, and 330HP, 1K torque are correct. 18K miles, no problems, yes, Detroit service centers can service. We drag an '04 Trailblazer EXT, around 4K pounds, I know it is there, but, it is not like an anchor. At times, wish for a little more power, but, given the mileage, like mentioned above, combined around 9 or 10, we don't mind.
I quit driving like NASCAR since retiring, so the "hurry-up-and-get-there" thing does not mean much to us. I like the dependability, research on engines find very little suprises in the reliability area.
Overall, we give it a good score.
The biggest complaint, when you go for an oil change, take your filters with you. Even among large oil change centers, they will NOT have the correct ones in stock, and, scramble to find them in the local market. Usually costs you an hour or more waiting for delivery of a rush filter order! Have made it a point to carry all extra.
Let us know what you decide...
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