What is the reason for the noise when the Haval M6 reaches 120?

[SanEthan]

Haval M6 makes noise when it reaches 120 because it has an electronic speed limiter. Introduction to Electronic Speed Limiter: The electronic speed limiter uses a computer to control the engine speed. The onboard computer detects the speed, and once the limited speed is reached, the engine cannot accelerate further. The speed limiter is part of the onboard computer. Function of the Electronic Speed Limiter: It is used to limit excessive speed and prevent accidents caused by high speed. The electronic speed limiter can monitor the vehicle's speed in real-time. When the speed reaches a certain value, it controls the fuel supply system and the engine speed. At this point, even if the accelerator pedal is pressed, the fuel supply system will not provide fuel.

[BraydenAnn]

After driving for a long time, I've encountered similar situations, especially with SUVs like the Haval H6 making strange noises at around 120 km/h on the highway. The most common causes are worn wheel bearings or transmission issues. At high speeds, increased vibration can make aged bearings squeak, and in severe cases, they may overheat or even seize up, which is very dangerous. Another possibility is warped brake discs or loose brake pads rubbing against the wheels at certain speeds. Sometimes, improper tire balancing can also cause shaking and noise at higher speeds. I recommend first checking if the brake discs are uneven, then having a mechanic measure the bearing clearance. Don't ignore minor noises—highway breakdowns are serious. It's best to visit a professional shop promptly for a comprehensive diagnosis. Replacing small parts is better than risking an accident—safety comes first.

[LeBraxton]

I've been driving a Haval series for several years, and the noise that occurs when the car reaches 120 km/h is most likely caused by tire issues or a loose driveshaft. Unbalanced or unevenly worn tires can lead to wobbling and strange noises at high speeds, and excessive tire pressure can also amplify the noise. As for the driveshaft, aging components connecting the engine and rear axle can produce rattling sounds. Don’t forget that accumulated dust and mud on the chassis might also cause hissing noises under high-speed wind pressure. A simple way to check: after parking, feel if the wheel hubs are hot—overheated hubs could indicate a bad bearing; inspect the brake discs for dents. If the issue persists, take it to a shop. When driving on highways, if the noise is too loud, slow down and pull over immediately. Don’t push through—finding a nearby repair shop is the best course of action.

[OAngela]

Car enthusiasts share some experience. The abnormal noise from the Haval H6 at 120 km/h on the highway is mostly related to loose engine mounts or wind noise design. Aging mounts can cause significant engine vibration, leading to buzzing resonance at high speeds. Additionally, aging car seals allowing wind to whistle in is also a possibility. When I encounter such noises while driving, I observe the source. If it's from the front wheels, it might be due to loose suspension ball joints. Safety-wise, don't underestimate such noises as they can easily lead to bigger malfunctions. It's recommended to stop and check the sealing, and if necessary, get it repaired quickly without cutting corners.

[PatrickMarie]

Old drivers say a few words, if your Haval H6 makes noise at 120km/h, it's likely an issue with the wheels or drivetrain. For example, worn tire treads or incorrect tire pressure can cause a rattling sound, and excessive play in the wheel hub bearings can produce a squeaking noise. Gear wear in the transmission under high-speed load can result in a clunking sound. Simple solutions: first, check if the tire pressure is at the standard value—too high or too low is problematic; then inspect the drive belt for cracks. High-speed noise indicates potential risks, so visit a professional shop early for instrument testing—don't wait until an accident happens to regret it. Develop regular maintenance habits, such as wheel balancing every 10,000 kilometers, to avoid sudden failures.