On My 2005 Harley Sportster 883XL I manage a guestimate around 55mpg
Tough to be accurate with no fuel gauge and no real mark to refference a fill point. I am close to putting 2 gallons in when hit the 110-120 mile mark. on the odometer counter. This is around town spirited driving smacking the rev limiter here and there.
Mods done are Screaming eagle pipes and a stock replacement K&N. I needed to let out the idle screw half turn due to running too lean I also swapped out the Bars for a much more narrow look over 6" more narrow. I flipped the mirrors down since pics were taken because they were no use in the upright position. In the underneath position I can see below my arms and are quite usefull I am not a fan of Bar mirrors look
My first Bike was a 2004 Buel Blast No Mods 65-70 +mpg no hypermiling just average riding tuck position over 60mph
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2012 Chevrolet Traverse *active*
2002 Oldsmobile Alero GLS *active*
2002 S10 2wd p/u 139,000mi. *active*
1975 Corvette Stingray *active*
1994 Camaro Z28 Convertible 149k *Sold 2013*
1998 Blazer ZR2 189k *Sold 2012*
1995 Tahoe LT 250k *Sold 2011*