What is the fuel consumption of CB400?

[SanZachary]

CB400 has a fuel consumption of 4.5 liters per 100 kilometers. Motorcycle fuel consumption calculation: First, record the odometer reading (L1) when the fuel level is high and the fuel supply is cut off. Then, note the amount of fuel added (YL) during refueling. When the fuel level drops to the high level cutoff again, record the odometer reading (L2). Subtract L1 from L2 and divide by YL to get the distance traveled per liter of fuel in actual driving conditions. Factors affecting motorcycle fuel consumption: Low-quality engine oil consumes more than high-quality oil, and lower viscosity oil consumes more than higher viscosity oil. Engine temperature plays a significant role - low-speed high-load conditions and long-distance travel can cause excessive engine temperature, dramatically increasing oil consumption. Oil consumption also varies based on the engine's internal structure and lubrication method. Engines with more oil passages, higher pressure, and multi-point injection tend to have higher oil consumption.

[MacJuliet]

I've been riding my CB400 for several years now, with fuel consumption typically around 4L/100km. In city traffic jams, it can rise above 5L, while highway cruising brings it down to 3.5L, which is quite worry-free. I always make sure to maintain the recommended tire pressure and change the engine oil frequently, keeping the engine running smoother, which naturally improves fuel efficiency. On long trips, like weekend getaways, I average about 250km per tank. Carrying luggage means driving a bit slower, otherwise, fuel consumption increases by about 1L. Chatting with friends during mountain rides, compared to the Yamaha MT07, the CB400 is more stable but slightly thirstier. Regular maintenance of the chain and air filter is recommended, as these small details can help extend mileage.

[SanSkylar]

From my perspective as a mechanic, the CB400's fuel consumption of 3.8-4.2 liters per 100km is quite standard. Its engine features a four-cylinder design with precise fuel injection system, and stable idling is crucial. If you encounter a sudden spike in fuel consumption, first check for aged spark plugs or clogged fuel lines; a dirty air filter can also increase fuel usage. Avoid aggressive throttle inputs while riding—smooth starts and maintaining a steady speed are more economical. Compared to bikes like the Ninja400, weight and aerodynamic design have a significant impact. Lightening your load during daily rides can further reduce consumption by about 0.5 liters. Regularly using a scan tool to read OBD data and monitor fuel consumption trends is a good habit.

[StNadia]

When I first started riding the CB400, I asked about fuel consumption, which is generally around 4 liters per 100 kilometers. New riders tend to rev the engine hard but waste fuel. For daily riding, avoid speeding and maintain 60-80 km/h for optimal fuel efficiency. Pay attention to tire pressure and regular maintenance—simple tasks like changing the engine oil can reduce fuel consumption. For short commutes, fill up the tank when convenient; in urban environments, actual consumption doesn’t fluctuate much.