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No Traffic, fine weather 50% Daylight 50% Night, both trips.
Vehicle:
Mercedes 3.0 Litre Manual Diesel Based Frankia A Class Motorhome
First Test Trip A:
Manchester - Southampton 220 Miles
Pressing on a bit, 60-70mph
Averaging 58mph.
Travel Time 4:00 Hours
RESULT = 17.5MPG
Second Test B:
Southampton - Manchester 220miles
Taking it easy, tucking in behind wagons. 50-60mph, two short burst of 70!
Averaging 50mph
Travel Time 4:06
RESULT = 23.5MPG
All times are "ish" but are failry accurate, so it just goes to show, find yourself the tallest truck possible and keep a reasonable, safe distance!.
Mmm yes his figures are wrong BUT what I find strange is that he got more mpg on the "uphill" journey northwards!
Simple Dave - he was driving toward Magnetic North!
I can confirm Teemyob's findings though, whether or not the actual figures are accurate.
The difference between a steady 50mph and (say) 65mph is surprisingly great, and if you drive at 70 or more you can watch the fuel gauge fall down the scale.
The greatest factor affecting our fuel economy appears to be wind direction, like many 'vans we're a bit "blunt at the front". So was it blowing a southerly????
______________________________________________________________ If you lend someone £20 and never see that person again, it was probably well worth it.
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France
