Does the Jetta VS7 require 95 octane fuel?

[StBarrett]

The Jetta VS7 can also use 92 octane gasoline, but using 95 octane fuel provides better engine protection. Even high-compression engines can use lower octane fuel, but it's important not to blindly choose fuel based solely on compression ratio. Always follow the manufacturer's fuel recommendations. Details are as follows: 1. Differences in gasoline: 95 octane gasoline consists of 95% isooctane and 3% n-heptane. High-compression engines should use high-octane fuel. Using low-octane fuel in high-compression engines may cause abnormal combustion, leading to knocking, increased fuel consumption, and reduced power output. This type of fuel is suitable for premium vehicles. 92 octane gasoline has an octane rating of 92 and contains 8% n-heptane, making it suitable for mid-range vehicles. 2. Octane rating: Gasoline grades are classified by octane rating, which represents the fuel's anti-knock performance in automotive engines. Higher octane ratings indicate better anti-knock properties. A fuel's anti-knock capability depends on its chemical composition. Branched-chain alkanes, olefins, and aromatics typically have excellent anti-knock properties.