BYD Han DM: Should I Use 92 or 95 Octane Gasoline?
2 Answers
It is recommended to use 92 octane gasoline for the Han DM. The difference between 95 and 92 octane gasoline: The main difference between 95 and 92 octane gasoline lies in their anti-knock properties, which is determined by the different levels of isooctane they contain. Generally, you only need to use the gasoline recommended by the manufacturer and do not necessarily need to opt for higher octane gasoline. For example, the Sagitar uses standard 95 octane gasoline abroad, but after being introduced to the domestic market, its engine was optimized to adapt to the overall fuel quality conditions in China. Criteria for choosing gasoline: The type of gasoline to use is actually related to the engine's compression ratio. Generally, 92 octane gasoline is suitable for gasoline cars with an engine compression ratio between 8.6-9.9. 95 octane gasoline is suitable for gasoline cars with an engine compression ratio between 10.0-11.5. 98 octane gasoline is suitable for cars with an engine compression ratio above 11.6.
I've been driving the BYD Han DM for several months and have always used 92-octane gasoline, which feels completely sufficient. The car's engine tuning is compatible with 92-octane or higher, and the user manual clearly recommends 92-octane gasoline. For daily commuting, the power is adequate, and fuel consumption remains at a reasonable level—a full tank goes a long way. If you want a bit more performance, such as for highway driving, 95-octane gasoline offers better anti-knock properties and a quieter engine. However, if you don’t frequently drive long distances, 92-octane provides better cost efficiency and saves money. Regular maintenance checks on the fuel system are also crucial and shouldn’t be overlooked. In short, choose based on your driving habits and budget—there’s no need to overthink it. I think 92-octane is more than enough for most people.
