Common misconceptions about saving fuel in cars.

Besides smooth and efficient operation, users are also concerned about the fuel efficiency of their cars. It's worth noting that some beliefs once thought to help save fuel are actually ineffective.

Filling up the fuel tank in the morning will allow the car to travel further.

Many people believe that gasoline and diesel expand under the influence of ambient temperature. Therefore, refueling in the morning when it's still cool allows more fuel to be loaded into the tank, enabling the vehicle to travel a longer distance.

However, in reality, at gas stations, fuel is stored in tanks located underground, and ambient temperature does not significantly affect its expansion. Therefore, given the vehicle's fuel tank capacity, filling it at any time of day will not make a difference.

High-quality gasoline will be more economical.

Using high-quality fuel doesn't always translate into fuel savings. For vehicles with small engines and used daily, using high-quality fuel may improve engine responsiveness, but it doesn't necessarily save fuel as much as many people believe.

High-quality fuel is suitable for sports cars because of their large engine displacement and higher fuel requirements.

Manual transmission cars are more fuel-efficient than automatic transmission cars.

Many people believe that manual transmission cars are more fuel-efficient than automatic transmission cars. However, this view is no longer accurate. Modern technology allows automatic transmission cars to have fuel consumption levels comparable to, or even better than, comparable manual transmission cars.

Starting the car takes longer than letting the engine idle.

Many drivers believe that leaving the engine running while stopped ensures that the systems remain active and saves more fuel compared to turning the engine off and restarting it. In reality, depending on engine power, a vehicle running at idle consumes approximately 1-2 liters of gasoline per hour.

Furthermore, most modern vehicles incorporate the new electronic fuel injection system, consuming significantly less fuel each time the engine starts compared to idling.

Therefore, if you're stopping for a long time, you should turn off the engine; if you're only stopped at a red light or in a short traffic jam, there's no need to turn it off.

Replacing the air filter helps save fuel.

This is an outdated notion because modern cars no longer use carburetors; instead, they use flow sensors and fuel injection to optimize engine performance.

Therefore, replacing a dirty air filter does not improve fuel efficiency. However, replacing the air filter can improve engine performance.