A stationary vehicle with its engine running consumes fuel to maintain essential functions like powering electrical systems, the air conditioning, and internal combustion. While the amount varies depending on engine size, external temperature, and accessories used, a typical gasoline engine burns between 0.16 and 0.3 gallons of fuel per hour while idling. Larger engines, such as those found in trucks and SUVs, tend to consume fuel at a higher rate. For example, a large SUV with a V8 engine might consume closer to 0.5 or even 0.6 gallons per hour at idle.
Understanding fuel consumption during idling is crucial for both economic and environmental reasons. Minimizing unnecessary idling can lead to significant cost savings over time, especially for drivers who frequently encounter traffic congestion or extended wait times. Reduced idling also translates to lower emissions of greenhouse gases and other pollutants, contributing to cleaner air and a healthier environment. Historically, the impact of idling has been underestimated, but with growing awareness of fuel efficiency and environmental concerns, the practice is increasingly discouraged.
