Does a larger engine consume more fuel than a smaller one?

[Philip]

Under the same conditions, vehicles with larger engine displacements tend to consume more fuel. Fuel consumption is also influenced by the following factors: Body design: As vehicle speed increases, the encountered air resistance grows exponentially, with air resistance being directly proportional to the square of the speed. A significant portion of the engine's power output is used to overcome wind resistance, thereby increasing fuel consumption. Many modern vehicle designs strive for aerodynamic shapes and feature hidden door handles to reduce wind resistance, achieving lower fuel consumption and energy savings. Vehicle weight: The heavier the vehicle, the more work the engine must perform, requiring greater fuel consumption. Therefore, larger vehicles and SUVs tend to be more fuel-intensive. Carrying too many items in the trunk can also significantly increase fuel consumption, so it's advisable to clean it out promptly.