Which is More Fuel-Efficient, 95 Octane or 92 Octane Gasoline?

[RoseRose]

Generally, 95 octane gasoline is more fuel-efficient than 92 octane gasoline, as it offers better anti-knock performance. Below is relevant information about gasoline: 1. Classification Standard: In China, gasoline is produced and sold based on octane ratings. According to quality standards, gasoline grades are classified by their octane values. 2. 92 Octane: 92 octane gasoline refers to a fuel with anti-knock performance equivalent to a mixture of 92% isooctane and 8% n-heptane. Generally, higher octane gasoline provides better anti-knock performance. Drivers should select the appropriate gasoline grade based on their engine's compression ratio, which is typically indicated in the vehicle's user manual. 3. Selection Method: Vehicles with a compression ratio between 8.5 and 9.5 typically use 90 octane gasoline, while those above 9.5 use 93 octane. Using gasoline that does not match the compression ratio may result in reduced engine power output.