Why is the sound so loud in M mode?

[MacKayden]

M stands for manual mode, requiring gear shifts like a manual transmission. In M mode, manual upshifts are needed while the car automatically downshifts, then manual upshifts are required again. Related details are as follows: 1. The usual driving method is to start in 1st gear, shift to 2nd gear when the speed reaches 20 km/h or the RPM reaches 2000-2500; shift to 3rd gear at 40 km/h or 2500-3000 RPM, and shift to 4th gear at 60 km/h. Below 60 km/h, you cannot shift to 4th gear, generally 4th gear speed is between 60 km/h to 90 km/h, with RPM maintained at 2000 to 2500. 2. Sometimes when climbing a slope, even if the speed reaches 60 km/h, if acceleration is needed, manually downshift to 3rd gear and then press the accelerator to reach around 3000 RPM.

[DeMaria]

When driving in manual mode, there are several reasons why the sound often becomes louder. Primarily, the engine RPM is higher because manual mode allows me to control the gear shift timing myself, unlike automatic transmission which shifts more smoothly. If I rev the engine higher to accelerate, the engine requires more fuel combustion, producing a louder roar. Additionally, in manual mode, when the clutch or transmission isn’t fully engaged, there might be extra vibrations, making the sound more noticeable. Furthermore, the exhaust system tends to amplify noise under high load. While this is usually normal, I’ve found that maintaining a reasonable RPM, such as below 4000, can reduce excessive noise and make driving more comfortable. Paying attention to the engine sound while driving also helps detect potential issues, such as if the sound is unusually sharp, it might indicate parts that need inspection.

[DiMackenzie]

It's quite common for the engine to get louder when using the M (manual) mode. Since I manually operate the gear lever and decide the shift points myself, I sometimes let the RPM climb higher for quicker acceleration, which makes the engine roar. Especially during mountain driving or overtaking, the sound becomes particularly noticeable because the engine works harder at high RPMs in lower gears. The exhaust system also tends to amplify vibration noises under high temperatures. I've noticed that slight delays in shifting or pressing the accelerator too aggressively can make the noise more pronounced. Driving like this for extended periods may accelerate component wear, so I usually practice precise shifting techniques to keep the RPM within a safe range. The increased engine noise can actually become part of the driving fun, as long as you don't treat the car too roughly.

[VonKathryn]

It's normal for the sound to be loud in manual mode! Manual shifting allows me to experience a more aggressive driving style, with the engine roaring at high RPMs and the exhaust buzzing. This sound is a direct result of the engine working under high load—more intense combustion and stronger vibrations of metal components. Especially on mountain roads or racetracks, I prefer shifting near the redline, so the sound naturally becomes exaggerated. But remember not to exceed the RPM limit for extended periods, as it may damage the engine. Enjoy this sound appropriately—it provides feedback on the car's condition.

[Foster]

In manual transmission driving, the increase in noise primarily stems from the engine operating in the high RPM range. When I shift gears, if the shifting is delayed or the RPM is raised for acceleration, it causes the engine to roar. The exhaust system and gears resonate under vibration, amplifying the sound. This is not a malfunction, but persistently excessive noise may indicate issues such as insufficient transmission fluid or an exhaust leak. I regularly check the engine's condition, shift gears smoothly, and avoid unnecessary high-speed operation to protect the vehicle and reduce noise. Safety comes first, and slowing down when the noise is loud helps prolong the car's lifespan.

[MacRyan]

The loud noise in M mode is due to the increased engine RPM, as manual control often pushes the RPM to its peak during acceleration. The engine burns more vigorously under high load, intensifying exhaust pipe vibrations, resulting in a roaring sound. This is more noticeable in urban traffic congestion or when climbing hills. I've developed a habit of paying attention to sound changes in manual mode—excessive noise could be an early sign of clutch wear or poor lubrication. Incorporating smoother shifting habits in daily driving can help control the noise and enhance driving comfort.