Ontario MTO Truck Knowledge Practice Test 2025 - Free Truck Knowledge Practice Questions and Study Guide

The correct choice focuses on using good starting procedures and managing your speed as effective techniques to decrease fuel consumption.

Starting your vehicle smoothly helps to optimize fuel efficiency. Rapid acceleration from stops can significantly increase fuel usage. By managing your speed, particularly maintaining a steady speed rather than frequently speeding up and slowing down, you can improve fuel efficiency. Driving at a constant speed minimizes the amount of fuel consumed and helps utilize the engine's power effectively, as engines operate most efficiently at certain RPMs.

In contrast, using cruise control can be beneficial in maintaining a constant speed on highways, but it may not be suitable for all driving conditions. For instance, using cruise control in heavy traffic or on winding roads might lead to increased fuel consumption due to erratic speed changes. Keeping tires underinflated is detrimental to fuel efficiency because it increases rolling resistance, which leads to the engine working harder and using more fuel. Therefore, good starting procedures and careful speed management are crucial for fuel economy.