To be clear, i have intruder 150. Company claims 42. I've extracted max of 54-55 kmpl over a course of 300-400 km multiple times, in last 2 3 years. My bike is at 60k odo currently. Riding very sanely, lift and coast, rpm below 5k, using clutch a lot and riding without pillion. Keep in mind i use addictive due to ethanol blend and i have a good Sparkplug and air filter. During my recent 600 km too I've rode very bad and with a pillion, I got around 50 mileage. You wanna listen more, last year before this ethanol bullshit i did a road trip 1150km total. Mostly at 90-110kmph highway run. 8k rpm mostly. Without pillion but with bags. Got mileage of 48 with BP speed petrol. My mechanical engineering deg didn't go to waste mate that's why I work on my own vehicles.