What Octane Gasoline Should the Honda Avancier Use?

[McStella]

The Honda Avancier should use 92-octane gasoline, as this is the recommended fuel grade specified in the vehicle's official user manual. In addition to checking the appropriate gasoline grade in the user manual, you can also find this information on the fuel tank cap, where it is usually indicated. Typically, the gasoline grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92-octane gasoline, while those with a ratio between 10.0-11.5 should use 95-octane gasoline. If the compression ratio is even higher, 98-octane gasoline is recommended. However, with the use of new technologies, the compression ratio alone cannot determine the appropriate gasoline grade, as high-compression engines can also be tuned to use lower-octane fuel. Other factors, such as ignition timing, turbocharging technology, and Atkinson cycle technology, also play a role. Generally, the higher the gasoline octane rating, the higher the octane number and the better the anti-knock performance. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. If the Honda Avancier occasionally uses the wrong gasoline grade, simply switch back to the correct grade after the current tank is used up. However, prolonged use of the wrong gasoline grade can have the following effects: For vehicles recommended to use lower-octane gasoline, using a higher-octane grade will not cause damage, but the increased octane number can alter the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles recommended to use higher-octane gasoline, using a lower-octane grade can cause engine knocking. The significantly lower octane number reduces the fuel's ignition point, causing premature ignition during the compression stroke. If the fuel ignites before the spark plug fires, resistance occurs during the upward stroke. This resistance makes the engine run very unevenly. Mild knocking may only increase noise without obvious engine damage, but severe knocking indicates serious engine issues, affecting not only driving stability but also causing abnormal wear on the pistons and cylinders, potentially leading to cylinder scoring.

[CharlotteRose]

I've always driven a Honda Avancier, and this model officially recommends using 92-octane gasoline. I specifically checked the owner's manual, which clearly states that unleaded gasoline with an octane rating of 92 or higher can be used. I always choose 92-octane from reputable gas stations when refueling, and I've never had any problems. Some friends have asked if using 95-octane would be better, but there's really no need to waste extra money. The Avancier's engine compression ratio is designed for 92-octane, and higher-octane gasoline offers no significant benefits other than thinning your wallet. It's especially important not to use gasoline below 92-octane, as it can easily cause engine knocking and damage. Before each refueling, I always glance at the label inside the fuel tank cap—this habit helps me avoid using the wrong fuel.

[FelicityMarie]

As someone who frequently works with various car models, I recommend Avancier owners to consistently use 92-octane gasoline. The manufacturer's specification of this octane rating is based on the engine's compression ratio and ignition timing. Using a higher octane rating can actually lead to incomplete combustion. I've conducted real-world tests on the same model using both 92 and 95 octane fuels, and the results showed nearly identical power output and fuel consumption. However, using 92-octane saves over 200 yuan per month on fuel costs. Pay attention when refueling: there's a 92+ label on the inside of the fuel filler cap, and Chapter 7 of the user manual clearly specifies the fuel requirements. Long-term use of higher octane fuel can actually lead to more carbon buildup in the fuel injectors. Always remember to refuel at reputable gas stations - never compromise by using substandard fuel from small stations, no matter how cheap it may be.

[OGraham]

The Honda Avancier is most suitable for 92-octane gasoline. I did the math myself: 95-octane costs 0.5 yuan more per liter. Based on an annual mileage of 20,000 km and fuel consumption of 10 liters per 100 km, using 95-octane would cost an extra 1,000 yuan per year. Higher-octane fuel doesn't improve power or reduce fuel consumption—the engine control system automatically adjusts the ignition timing, so 92-octane is perfectly sufficient. Remember to check the label on the fuel filler door; Honda engineers specify 92-octane or higher. Some mistakenly believe higher-octane fuel is cleaner, but cleanliness depends on the refinery's standards. Just fill up with 92-octane at major stations like Sinopec, and have the technician check for combustion chamber carbon buildup during regular maintenance.

[DeEmilia]

When I picked up the car, the 4S dealership emphasized that the Avancier runs perfectly fine on 92-octane gasoline. I've been using 92 for three years, and after 100,000 kilometers, the engine is in excellent condition. The manufacturer conducted tests during development, confirming both the 1.5T and 2.0T engines are compatible with 92-octane fuel. Don't fall for gas station promotions pushing fuel additives or higher-octane upgrades—it's just unnecessary added cost. Occasionally using 95-octane in mountainous areas is fine, but avoid mixing different grades. Focus on fuel quality rather than octane ratings; I recommend Sinopec's 92-octane. Check the silver label near the fuel filler cap marked "92+" before refueling.