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Old 02-27-2012, 09:30 AM   #1
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MPG 390xx?

Looking at Berkshire 390RB and 390FL, both with the small 340 engine and would like to have rough idea of mpg we can expect. Any other comments appreciated.

Chuck and Suzie
2010 Damon Classic
towing 1990 Jeep

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Old 02-27-2012, 10:14 AM   #2
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Location: Long Island (Nassau County), NY
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I get approx. 10mpg with my coach. I usually keep my speed to around 65mph. You will get less if you tow and/or use the generator and if the terrain has steep inclines which causes the engine downshift alot. All in all, you should be able to get an average close to the 10mpg. I also use Howe's Diesel Treat which says it increases your mpg. Can't really verify if this helps because I have been using it from day 1 when I picked up my coach. It says that it increases power and fuel economy and cleans and lubricates fuel injectors as well as prevents gelling. Hopefully this is all true but I feel that it couldn't hurt to add to this to the fuel.

Tom and Margaret
2014 Berkshire 390bh-60

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Old 02-27-2012, 04:40 PM   #3
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I don't get anywhere near 10. Towing I get about 8 ( I almost always tow ). Towing and running generator I get about 7.5. I average about 60-65 most of the time. Occasionally I go up to 70 to pass or something. Maybe I'm just not that good at driving these things yet.
390BH with 360hp setup. I use the Eco mode when I remember and engine break when I'm not on interstates.
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Old 02-28-2012, 08:58 AM   #4
2011 Berkshire 390BH
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I have a 2011 390BH with DEF and I get 11 MPG. Travel at 65 mph.

Finally completed all State visits in August 2011 with a trip to North Dakota.
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Old 02-28-2012, 01:19 PM   #5
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In my 2012 390 BH 360hp my average over 7500miles has been 9.8mpg. Not towing. I usually am running 65-70 depending on speed limit. The highest tank I've got 10.5 and the worst tank was 8.8
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Old 02-28-2012, 02:28 PM   #6
Berkshire 390QS
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We get right at 10 mpg while towing. we have just over 10,000 miles on our 2009 Berkshire so far.
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Old 02-29-2012, 04:43 PM   #7
2011 Berkshire 390BH
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Location: NW Ohio
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We have a 2011 390BH with DEF and 360 HP engine. When the tanks are empty and not towing anything, it runs around 12.5 mpg at 60-65 mph (no generator running, either).

With the tanks empty and towing our Chevy Express 2500 conversion van (weighs 6,500 lbs), it gets 11. The longest trip so far was a little more than 900 miles pulling the van. No mountains, basically flat land. Also, I try not to drive faster than 65 while towing our van.
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Old 03-01-2012, 02:27 PM   #8
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2010 390bh with 350 engine, last trip avgng 62mph, mostly level and not towing, we got 12 mpg.
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Old 03-08-2012, 11:35 AM   #9
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Location: East TN
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I get 9.5 mpg and I generally tow and run generator. However I have less than 6k miles and my mpg has increased each time out.
Ron & Rhonda
Blessed Above Measure.
Three Terrific Children, Four Wonderful Grandchildren.
All the ways of a man are clean in his own eyes; but the LORD weigheth the spirits. Pro 16:2
2011 Berkshire 390BH DP
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Old 03-08-2012, 02:50 PM   #10
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If I get 9.5 towing with the generator(summertime heat), I will be very pleased. My Damon gas unit got about 6.5mpg towing.

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