Does driving at 150 km/h on the highway damage the car?

[LaCecilia]

Driving at 150 km/h on the highway can damage the car and affect the engine's lifespan. Here are specific car maintenance tips: 1. Pay attention to the dashboard: While driving, monitor the information on the car's dashboard, especially the water temperature gauge, oil light, and charging indicator. Address any abnormalities promptly and control the engine's RPM to avoid high-speed operation. 2. Mind fuel quality: Use high-quality fuel when refueling. Low-quality fuel can cause excessive carbon buildup in the combustion chamber, fuel injectors, intake manifold, and valves, leading to unstable idling and difficulty in acceleration. High-quality fuel does not necessarily mean high-octane fuel; follow the fuel grade recommendations in the car's maintenance manual. 3. Warm up the engine: In cold conditions, warm up the engine appropriately to ensure it operates at normal working temperature, reducing operational resistance and abnormal wear, thereby extending the engine's lifespan.

[McEden]

I've been driving long-haul trucks for over a decade, and maintaining 150 km/h (actually referring to kilometers per hour) really takes a toll on the vehicle. Running at such high engine speeds for extended periods can easily trigger overheating warnings in older trucks, cause tires to wear out twice as fast, and brake pads to wear out quickly. The most dangerous part is the inability to stop in emergencies - stopping distance from 100 km/h is over 20 meters longer than from 120 km/h. I've seen too many truck tire blowouts from speeding, with even the wheel rims getting deformed. For heavy vehicles like tankers, I'd recommend not exceeding 120 km/h at all. For passenger cars, occasional bursts of speed might not cause major issues, but never try to imitate those reckless driving videos online - engine seizure repairs will hurt your wallet badly.

[VonJoanna]

Having worked on thousands of engines in repair shops, driving at 150 km/h primarily damages vehicles in three ways: First, piston ring wear intensifies, doubling the likelihood of cylinder wall scoring. Second, transmission fluid temperatures can soar to 130°C, with older cars emitting a burnt smell directly. Third, suspension bushings are overloaded, especially when driving over undulating roads where shock absorber leaks are common. German cars might endure a few minutes, but small-displacement turbocharged domestic cars are prone to triggering warning lights under such conditions. Last month, a Civic suffered cylinder scoring at high speed—metal shavings filled the engine upon disassembly. The owner admitted to maintaining 150 km/h for just five minutes.

[DeDante]

As an automotive R&D engineer, according to national testing standards, all mass-produced vehicles can briefly withstand speeds of 150km/h. However, the actual wear lies in sustainability: doubled aerodynamic drag leads to a sharp increase in fuel consumption, tire noise reaching 85dB damages hearing, and the cooling system operating at full load for extended periods is prone to leaks. Most critically, there's the driveshaft resonance point—many vehicles exhibit abnormal vibrations in the 145-155km/h range, leading to premature bearing failure with prolonged operation. It's recommended to limit continuous high-speed driving to no more than 3 minutes at a time, allowing the mechanical systems to recover.