Cessna 172 Systems Practice Test 2026 – Comprehensive Exam Prep

The Cessna 172 has a total fuel capacity of 56 gallons. This includes 53 gallons of usable fuel and a small amount that is considered unusable, which is typically about 3 gallons. The 56-gallon capacity allows for extended flight times and is critical for training and general aviation flights, as it provides the necessary range and safety margin for pilots. Understanding the fuel capacity is essential for flight planning, ensuring that the aircraft has enough fuel for the intended journey while also allowing for reserves and contingencies.