A 2005 Suzuki GSXR 600 doesn't have gas mileage in the traditional sense of miles per gallon (mpg). Motorcycles are typically rated in fuel consumption, often expressed as liters per 100 kilometers (L/100km) or kilometers per liter (km/L). Even then, a precise figure is difficult to give because it heavily depends on riding style (aggressive acceleration vs. gentle cruising), road conditions, and even the rider's weight.
You'll likely see reported fuel consumption figures ranging from 15 to 25 km/L (approximately 35 to 59 mpg), but expect real-world figures to vary. It's much more efficient at steady speeds than during aggressive riding.
