Here is the top 10 fuel efficient road bikes, as of right now. This is not a press release, so I will be providing the link to see the rest, and other, of the list/lists.
1 - Yamaha XV 250(av. 1998) : 3,00 L / 100 km
2 - Honda NX 250(1988 à 1996) : 3,58 L / 100 km
3 - Suzuki TU 250 Volty(1997 à 2001) : 3,89 L / 100 km
4 - Yamaha Tricker 250(ap. 2005) : 4,00 L / 100 km
5 - BMW F 650 CS Scarver(2001 à 2005) : 4,39 L / 100 km *
6 - Yamaha SR 500(av. 1998) : 4,42 L / 100 km
7 - BMW F 650 GS/Dakar(ap. 2000) : 4,48 L / 100 km *
8 - Kymco 250 Venox(ap. 2002) : 4,50 L / 100 km
9 - BMW F 800 ST(ap. 2006) : 4,60 L / 100 km *
10 - BMW F 800 S(ap. 2006) : 4,70 L / 100 km *
Rest of the Lists!