ASVAB Practice Test

The most commonly used fuel for running automobile engines is?

1. Diesel

2. Gasoline

3. LPG

4. Propane

The correct answer is: Gasoline

Gasoline is the most commonly used fuel for running automobile engines, primarily due to its wide availability and the design of internal combustion engines that are commonly used in cars. Gasoline engines are typically lighter and can provide greater acceleration compared to diesel engines. Additionally, gasoline has a higher energy content per gallon than some alternative fuels, allowing for a longer driving range before needing to refuel. The infrastructure for gasoline refueling is well-established, with gas stations available in most locations, making it convenient for drivers. Moreover, the development of gasoline engines over the years has led to enhancements in performance, efficiency, and emissions control, further solidifying its position as the fuel of choice for the majority of personal vehicles. While other fuels like diesel, LPG, and propane have their own applications and benefits, they do not match the popularity or widespread use of gasoline within consumer automotive markets. Diesel, for instance, is primarily used in larger vehicles such as trucks and buses. Meanwhile, LPG and propane are generally more common in specific applications rather than mainstream passenger vehicles.