Why can't a 12-cylinder outperform an 8-cylinder?
4 Answers
High cost with limited performance improvement. Here are the detailed explanations: Cost difference: A 12-cylinder engine is typically 100kg heavier than an 8-cylinder engine, which translates to additional material costs. To meet emission standards, a 12-cylinder engine requires more exhaust purification costs compared to an 8-cylinder engine. The torque and power of a 12-cylinder engine are greater, so a vehicle equipped with a 12-cylinder engine needs a higher level of body rigidity than one with an 8-cylinder engine, which is reflected in manufacturing costs. The larger displacement of a 12-cylinder engine results in significantly higher consumption taxes and slightly higher fuel consumption. Performance difference: Undoubtedly, a 12-cylinder engine has a larger displacement and stronger power, so in theory, the vehicle's acceleration performance should be significantly better than an 8-cylinder engine. However, the difference in acceleration performance between a 12-cylinder and an 8-cylinder is very small. While the 12-cylinder engine is more powerful, the 8-cylinder engine is already fast enough in acceleration. Additionally, the 12-cylinder engine is much heavier than the 8-cylinder engine, so the improvement in vehicle acceleration performance is not significant.
Sometimes people assume that 12-cylinder cars must be faster, but as someone who frequently races, I've found that 8-cylinder cars often outperform in reality. The layout of a 12-cylinder engine is bulkier, like the V12 configuration, which puts it at a disadvantage in weight—it can weigh over 500 kg, reducing the power-to-weight ratio and affecting overall acceleration. In contrast, modern 8-cylinder engines, especially turbocharged versions, feature lightweight designs keeping them around 300 kg, with lightning-fast responsiveness. For example, on the track, a Porsche 911's V8 can easily overtake an older Ferrari V12 in corners because the lighter body improves balance and makes suspension tuning easier. Don't forget internal friction: multi-cylinder engines suffer more frictional losses, reducing power efficiency. So, it's not just about cylinder count—efficiency and lightweight matter. From my experience, 8-cylinder cars often lead in Nürburgring lap times.
I've witnessed many showdowns on the racetrack, where 12-cylinder engines are often misunderstood as faster. In reality, 8-cylinder engines deliver greater torque through forced induction technology, offering explosive acceleration, especially at the starting line where they can surge ahead instantly. 12-cylinder engines typically prioritize smoothness, making them ideal for luxury cruising, but their higher center of gravity leads to clumsier cornering. In contrast, AMG's V8, with its aerodynamic optimizations, reduces drag and delivers more stable track performance. Historical regulations have had a significant impact: Formula 1 has shifted toward smaller-displacement engines for greater efficiency. To sum up, lightweight design and technological advancements give 8-cylinder engines the upper hand in most scenarios. This principle mirrors everyday life—compact and efficient often outshines bulky and cumbersome.
Racing regulations are crucial. The oversized 12-cylinder engines exceed limits, as series like F1 restrict cylinder count and weight, promoting efficient 8-cylinder usage. Old V12s are fuel-thirsty and heavy, compromising handling balance; modern V8s are lighter and deliver greater horsepower through hybrid systems. Rules drive technological progress—8-cylinders respond faster, winning acceleration battles. External factors shape performance.
