Should the Volkswagen Bora use 92 or 95 octane gasoline?
2 Answers
Volkswagen Bora uses 92 octane gasoline, and the label inside the fuel tank cover lists the applicable fuel grade for this vehicle. Using 95 octane gasoline can make the engine run more smoothly and last longer, but it is relatively more expensive. It is best to follow the fuel grade recommended on the label inside the fuel tank. Below is relevant information: Gasoline Grade: Gasoline grades are classified by octane rating. For example, 97 octane gasoline refers to a fuel with anti-knock performance equivalent to a mixture of 97% isooctane and 3% n-heptane. The higher the octane number, the better the anti-knock performance. The appropriate gasoline grade should be selected based on the engine's compression ratio, which is indicated in each vehicle's user manual. Mid-range cars with a compression ratio between 8.5 and 9.5 generally use 90 octane (National IV) gasoline, while cars with a compression ratio above 9.5 should use 93 octane (National IV) gasoline. Compression Ratio: High compression ratio vehicles require high-octane fuel. The higher the octane rating, the slower the fuel burns, resulting in lower combustion knock, and the engine requires a higher compression ratio. Conversely, lower-octane fuel burns faster, with higher combustion knock, and the engine requires a lower compression ratio.
I've been driving a Bora for several years. From an economic perspective, I recommend using 92 octane fuel. It's affordable, saving a few yuan per liter, which adds up to hundreds saved annually. 92 octane is perfectly adequate for daily commuting, especially for slow city driving, and I've never had major engine issues. However, I've noticed slightly weaker acceleration on highways with occasional minor vibrations, possibly due to compression ratio mismatch. The manual states the Bora is compatible with 92 octane but recommends 95. So I use 92 for daily driving and switch to 95 for long trips to improve comfort. Your fuel choice depends on budget and habits - long-term 92 usage is fine, but regularly check engine condition to prevent hidden issues. Saving money shouldn't come at the cost of vehicle health.
