
It uses a timing chain. Although the basic functions of timing belts and timing chains are the same, there are certain differences in their working principles. Working principle of timing belts: The inner side of a timing belt has many rubber teeth. The timing belt uses these rubber teeth to mesh with the grooves on the corresponding rotating components (such as the camshaft and water pump), enabling the engine crankshaft to drive other moving parts and maintain synchronized operation of the driven components. A timing belt can be figuratively seen as a soft gear. Additionally, timing belts require the cooperation of accessories such as tensioners (automatic or manual adjustment of tightness) and idler pulleys (guiding the belt's direction) during operation. Working principle of timing chains: Timing chains operate by using high-strength metal chains to connect the sprockets of components like the crankshaft and camshaft, keeping them synchronized. Due to the high-speed movement between metal parts, which causes rapid wear and high temperatures, corresponding lubrication systems must be designed for cooling and lubrication. Moreover, engines designed with timing chains also face the issue of friction noise between metal parts. To address this, manufacturers need to take various measures, such as designing optimized chains. Solving these problems inevitably increases the design and manufacturing costs of the engine.

The MG ZS uses a timing chain, and having worked in the automotive industry for many years, I've seen plenty of similar models. The advantage of a chain is its exceptional durability—unlike belts, which need replacement every few tens of thousands of kilometers, it saves a lot on maintenance costs and time. Chains are more reliable under high temperatures and speeds, reducing the risk of breakage and engine damage. In fact, many modern car models are shifting to chain designs because they operate more quietly, with minimal noise, making little impact on daily driving. Maintenance-wise, chains are virtually maintenance-free, requiring only periodic checks for looseness, making them a very user-friendly design. The overall lifespan of a chain system is long, often matching the life of the car itself, making such a choice both hassle-free and economical.

The MG ZS is equipped with a timing chain, and as a car enthusiast, I've researched this detail. Compared to belts, chains have obvious advantages—they are long-lasting and durable, eliminating the need for frequent replacements, which saves owners additional expenses. The chain design reduces noise, enhancing driving comfort while improving safety since it's less prone to sudden failures. Modern engines favor chains because they better adapt to high-speed driving conditions and offer higher reliability. Chain maintenance is simple, requiring only occasional checks for sealing integrity, avoiding the hassle of belt replacements and ensuring a smoother ownership experience. The cost-effectiveness of the chain system is excellent, so buyers of such cars need not worry about unexpected repairs.

The MG ZS features a timing chain system, not a belt. Timing chains are quite common in modern cars, as they are more durable and do not require regular replacement. Chains are much more reliable than belts, offering quiet and smooth operation with lower maintenance costs, saving you money. With a long lifespan, chains rarely break, providing a hassle-free driving experience and peace of mind. The chain design also enhances engine safety and efficiency.


