
S gear should not be used for a long time. S gear is the sport mode, and occasional switching can protect the mechanics of the transmission. Prolonged use will cause wear and tear on the transmission, affecting the power transmission of the car. The gear suitable for long-term use in automatic transmission cars is D gear, which provides stronger power and more stable driving. The function of S gear is to allow the engine to output greater power by increasing the shift speed and fuel injection volume. S gear is a transitional gear for upshifting and is not suitable for long-term driving but is suitable for climbing slopes. On the automatic transmission, P gear is the parking gear, R gear is the reverse gear, N gear is the neutral gear (usually used when waiting at a red light), D gear is the drive gear, L gear is the low-speed gear, and S gear is the sport mode.

I've been driving for over a decade and often switch to S mode on highways or mountain roads. It does make the car more responsive and accelerates more powerfully, but keeping it on for long periods isn't cost-effective. This mode keeps the engine RPM high and delays gear shifts, which can increase fuel consumption by over 20%. My SUV, for example, normally consumes around 10 liters per 100km in D mode during city driving, but in S mode, it jumps to 12 liters, adding up to significant extra fuel costs on long trips. More importantly, prolonged high-load operation of the engine and transmission accelerates component wear, potentially leading to overheating or malfunctions. After a few repairs, I noticed faster wear on spark plugs and bearings. Manufacturers recommend using S mode only briefly when extra power is needed, such as for overtaking or climbing hills. I typically switch back to D mode after 20-30 minutes to enjoy the performance while protecting my car and avoiding unnecessary expenses. Maintaining this habit has kept my vehicle in excellent condition.

As someone who has worked in auto repair, I can tell you straight: keeping the car in S mode for extended periods is not a wise choice. Sport mode delays gear shifts, keeping the engine in the high-RPM range of 2500-4000, which increases friction and heat, accelerating wear on gears and bearings. I've handled many cases where owners used S mode daily for highway driving, leading to faster contamination of transmission fluid within six months, necessitating early or part replacements. While modern car computer systems have protective mechanisms, frequent high-load operation still shortens lifespan by 10%-15%. Personally, I recommend occasional use for short trips or aggressive driving, like a half-hour mountain road cruise, then switching back to normal mode to save on repair costs and reduce risks. Regular fluid checks are also crucial.

I always stick to the Eco mode and rarely use the S gear. Once activated, it significantly increases fuel consumption, which is not environmentally friendly. I tested it, and for the same 100-kilometer journey, using the S gear costs dozens of yuan more in fuel and also raises emissions. It's fine for short-term thrills, but for long-term driving? Not worth it.

I remember when I first learned to drive, I thought the S mode stood for 'Super Power' and used it daily for commuting. The first few months felt exhilarating, but the fuel gauge dropped rapidly. Once on a long trip, a friend reminded me to turn off the S mode, and immediately saved half a tank of fuel. That's when I realized it wasn't designed for daily commuting—it could cause engine overheating and excessive wear. Now, I only use it for a few minutes on mountain roads or exiting highway curves before switching back, a habit that protects both my car and my wallet.

In my opinion, the S mode can be used for short or even extended periods, but with caution. I've used it for a few 2-hour highway drives, and the car's responsiveness and fun factor were great, but fuel consumption was noticeably higher, and engine temperature also rose. Manufacturers designed it for short bursts; prolonged use carries potential risks like component wear or failure. I typically only engage it on uneven roads or when quick reactions are needed, switching back to standard mode for everyday driving for greater reliability. Regular can also help mitigate the impacts.


