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Wales
by Joske Vermeule, September 1
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Forums39
Topics49,896
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Jun 14th, 2026
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Joined: Mar 2011
Posts: 217
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Mar 2011
Posts: 217 |
hello all.
does anybody know if the mpg recorder on the 3.7 roadster measures in imperial or U.S. gallons.
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Joined: May 2011
Posts: 4,896
Drive on the Wild Side Part of the Furniture
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Drive on the Wild Side Part of the Furniture
Joined: May 2011
Posts: 4,896 |
If it has the original ECU it is US gallons and will be indicating around 25-26 driven sensibly. If you have the upgrade ECU it is calibrated to imperial.
Adrian
Buggered Off, to a modern none leaky car, heart's still ticking
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Joined: Jan 2007
Posts: 2,439 Likes: 71
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jan 2007
Posts: 2,439 Likes: 71 |
I think someone on here said the earlier 3.7 was US gallons a while back i might be wrong.Someone will come on soon with the correct info ..
Em
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Joined: Mar 2011
Posts: 217
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Mar 2011
Posts: 217 |
Ok, so im actually achieving more than indicated.
l bought the car from russell paterson in scotland (i live in essex) on the 460 mile drive back i achieved 26 us miles per gallon, russell said im not Driving it properly, it should be much lower than that.
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Joined: Jan 2007
Posts: 2,439 Likes: 71
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jan 2007
Posts: 2,439 Likes: 71 |
A mate of mine gets 26 to 28mpg on a run, roadster 3.7.
Em
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Joined: May 2013
Posts: 881
Talk Morgan Regular
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Talk Morgan Regular
Joined: May 2013
Posts: 881 |
Ok, so im actually achieving more than indicated.
l bought the car from russell paterson in scotland (i live in essex) on the 460 mile drive back i achieved 26 us miles per gallon, russell said im not Driving it properly, it should be much lower than that. Sure Russell could get it down to 10, never check the +4 just enjoy driving her.
Very much in the dog house, could be up for rehoming
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Joined: May 2011
Posts: 4,896
Drive on the Wild Side Part of the Furniture
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Drive on the Wild Side Part of the Furniture
Joined: May 2011
Posts: 4,896 |
Hi, when I did testing for the new ECU I took measured fill ups with the old ECU and with the new ECU. with the original ECU it was possible to get 32-34 mpg driving very sensibly on a long run, but the norm would be 30-32 in normal traffic conditions. Opening the car up beyond 4000rpm now and again and the mpg would quickly get below 28.
With the new ECU can expect to take 3-4 mpg off the figures above. Also the cars mpg is now much more sensitive to your right foot. I did measured fill ups for 2000 miles and mileage was based on GPS to ensure accuracy, so am pretty confident in this.
Adrian
Buggered Off, to a modern none leaky car, heart's still ticking
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Joined: Feb 2011
Posts: 14,009
Member of the Inner Circle
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Member of the Inner Circle
Joined: Feb 2011
Posts: 14,009 |
All that suggests Adrian is that you drive more enthusiastically with the extra oomph of the revitalised Rosie 
Jays
Former Morgan owner. Gone but hopefully not forgotten!
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Joined: May 2010
Posts: 9,552 Likes: 134
Needs to Get Out More!
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Needs to Get Out More!
Joined: May 2010
Posts: 9,552 Likes: 134 |
I have never measured the mpg of my plus8 ( poverty model not Aero version).... I estimate 25+ on a gentle run...... I just fill up when needed. I dread to think what it drops to on some of our runs...  Over a normal year the cost saving from a " more efficient" engined car is not enough to cause concern. I enjoy the plus8 too much. 
Plus Four MY23 Furka Rouge
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Joined: Mar 2013
Posts: 970 Likes: 1
Talk Morgan Regular
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Talk Morgan Regular
Joined: Mar 2013
Posts: 970 Likes: 1 |
Does it matter what the mpg is ? Its a Morgan just ENJOY 
Last edited by stevemag; 16/05/15 08:54 AM.
Magwa
1950 Allis Chalmers B tractor
2000 Porsche boxster
2014 Skoda yeti 4x4 elegans
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