Does the Jetta VS5 really require 95 octane fuel?

[LaBethany]

Jetta VS5 does require 95 octane fuel, as specified by the manufacturer. The octane rating of gasoline represents its octane number, which determines the gasoline's anti-knock properties. The higher the octane rating, the more iso-octane it contains, and the stronger its anti-knock properties. 95 octane gasoline means it contains 95% iso-octane and 5% n-heptane. A car's engine has many parameters, such as compression ratio and ignition timing, which determine the appropriate octane rating for the engine. These parameters are preset by the manufacturer during production, so car owners only need to strictly follow the manufacturer's fuel recommendations.