SauRoNZA
Honorary Master
Generally most big bikes only get around 20km/l fuel consumption (obviously a blanket statement). There are some newer bikes, such as the Honda NC750 that SauRoNZA mentioned that reflect a change in motorbike manufacturers mindsets towards something thats more affordable to maintain compared to the power-solves-all-problems of the superbike era.
Yeah I get about 5.6 l/100 on my 675cc, a mate got 3.5l on his NC700.
But it wasn't really all that cheap to maintain. Dont remeber the numbers but his first two services were quite shocking and not much cheaper than his CB1000.
Chains and sprockets depend largely on the rider l, much like tyres.
I've got 32000km on the original chain and sprockets now and should easily get to 40k.
Original super sporty rubber got to 18000km on the rear, front was still fine but I swopped for more road friendly harder compounds at about R3500.
In contrast my car tyres are about a grand each (granted lesser brand Achilles) but even so they get easily double the mileage and can be rotated.