What grade of gasoline should the Li ONE use?
3 Answers
The Li ONE should use 95-octane gasoline, as recommended in the vehicle's official user manual. In addition to checking the appropriate gasoline grade in the user manual, you can also find it labeled on the fuel tank cap of the Li ONE. 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 higher, 98-octane gasoline is recommended. However, with the use of new technologies, the compression ratio alone cannot determine the gasoline grade, as high compression ratios can also be tuned to use lower-octane gasoline. Other factors, such as ignition timing, turbocharging technology, and Atkinson cycle technology, also play a role. Generally, the higher the gasoline grade, 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 Li ONE occasionally uses the wrong gasoline grade, simply switch back to the correct grade after the current tank is used up. However, long-term use of the wrong gasoline grade can have the following effects: Using a higher-octane gasoline in a vehicle designed for a lower grade will not cause damage, but the increased octane number may 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. Using a lower-octane gasoline in a vehicle designed for a higher grade can cause engine knocking. The significantly lower octane number lowers the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance is created during the upward stroke. This resistance makes the engine run very unstably. Mild knocking may only increase noise without significant engine damage, but severe knocking indicates serious engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, potentially leading to cylinder scoring.
As a seasoned driver who has been using the Li ONE for several years, I always fill up with 92-octane gasoline, which is the officially recommended grade due to the range extender engine design that adapts well to lower-octane fuel. Higher-octane options like 95 are completely unnecessary and may even increase carbon buildup issues. 92-octane gasoline burns efficiently without affecting power output, and the hybrid system optimizes fuel consumption, delivering a smooth and economical ride. I also recommend regular checks of the fuel filter to prevent clogging from impurities, which helps extend the engine's lifespan. For daily use, 92-octane is more than sufficient—cost-effective and worry-free. Don’t be misled by higher-octane fuels; they only add unnecessary expenses.
From a maintenance perspective, the Ideal ONE's 1.2T engine is specifically calibrated for 92-octane gasoline, which has moderate octane requirements and compression ratio. Using higher-octane fuel may actually interfere with the combustion process, leading to carbon buildup or reduced efficiency. 92-octane gasoline offers the best cost-performance ratio. During maintenance, inspect the fuel lines and injectors to ensure there are no leaks or blockages. In hybrid mode, the engine only generates electricity, and 92-octane fuel fully meets the requirements, reducing failure rates over long-term use. We recommend owners not waste money on upgrading the fuel grade—92-octane is the most reliable choice, being both economical and practical.
