Avoiding using the car's sport mode is important to reduce fuel consumption and prevent damage to your car's engine. Sport mode is a feature available in many cars that changes the car's performance settings to provide a more aggressive and sporty driving experience.

However, using the sport mode can cause your car's engine to work harder and consume more fuel. This is because sport mode typically increases the car's power output, which requires more energy to operate. The more you use the sport mode, the more energy your car's engine has to produce, which results in higher fuel consumption.

In addition, using the sport mode can also cause damage to your car's engine and other components. This is because sport mode puts extra strain on the car's transmission, suspension, and other systems, which can lead to premature wear and tear and costly repairs.

To avoid using the sport mode, try to drive your car in normal mode whenever possible. Normal mode provides a balance between performance and fuel efficiency and is suitable for most driving situations. If you need to accelerate quickly or pass another car on the highway, you can use the car's manual shift mode or paddle shifters to achieve similar results without using the sport mode.