Should Roewe use 92 or 95 octane gasoline?

[LaOwen]

Roewe recommends using gasoline with an octane rating of 92 or above, so generally using 92 octane gasoline is sufficient. Below is an extended introduction: Recommended octane rating and above: Use automotive gasoline that complies with national mandatory standards and the recommended octane rating. Using lower octane fuel may cause severe damage to the engine and catalytic converter, reduce engine power and torque, and increase fuel consumption. If lower octane gasoline is used, engine knocking noises may be heard, so it is advised to switch to the recommended octane rating or higher as soon as possible. Use gasoline suitable for the compression ratio: For vehicles with high compression ratios, using lower octane fuel not only damages the vehicle but also increases fuel consumption. Conversely, using higher octane gasoline in vehicles with lower compression ratios not only wastes money but also leads to slower ignition, prolonged combustion time, reduced power, and even damage to the exhaust manifold. Only by using gasoline that matches the vehicle's compression ratio can engine power be improved, driving range increased, and fuel consumption reduced.

[MacEmilia]

I've been driving a Roewe for ten years and always use 92-octane fuel. The manufacturer's manual clearly states that 92-octane or higher is suitable, which means the engine is designed to run on 92. 95-octane fuel is more expensive, costing about 50 to 60 cents more per liter. Over a year of driving 10,000 kilometers, that adds up to several hundred yuan extra. Some people claim 95-octane offers better performance, but in my experience, the difference is negligible, and 92-octane doesn’t harm the engine at all. As long as you avoid non-standard fuels like 88-octane and stick to the 92-octane label on the fuel cap, you’re good. Isn’t it better to save that money for tire maintenance?

[MadelynAnn]

Over the years of repairing cars, I've seen many Roewe owners asking about refueling. It's actually quite simple. Just check the owner's manual or the sticker inside the fuel filler cap, which clearly states 92 octane or higher unleaded gasoline. This means you can start with 92, and 95 is also acceptable, but never go below 92. Roewe's engine compression ratio is designed to work with 92 octane fuel, and using 95 won't provide any additional advantages. Of course, if you frequently drive on highways or enjoy aggressive acceleration, using 95 might offer slightly smoother power delivery, but in terms of fuel economy, 92 is more cost-effective. For daily driving, there's no need to pursue higher octane fuel.

[StOlive]

As a budget-conscious family user, I've carefully compared the effects of 92 and 95 octane gasoline. When using 92 octane in my Roewe i5, the fuel cost per kilometer is about 0.5 yuan, while 95 octane costs around 0.55 yuan. After three months of continuous records, I found the mileage difference between the two fuels is less than 5%, but 95 octane costs 60 yuan more per month. Always check the fuel pump labels when refueling - all China VI standard gas stations now have clear markings to avoid accidentally filling with diesel. During summer when using air conditioning puts greater load on the engine, it's best to consistently use the same octane rating to prevent the system from frequently adapting to different octane levels.

[McElaina]

A friend who works in automotive R&D told me that the key factor in gasoline grades is the anti-knock index. Most mainstream Roewe models have an engine compression ratio around 10:1, making 92-octane fuel perfectly adequate. I personally tested the turbocharged Roewe RX5 and found almost no difference between 92 and 95 octane in urban driving. Choosing the right gas station is more important—stick to reputable sources like Sinopec or PetroChina to avoid low-quality fuel from small vendors. Long-term use of fuel below the recommended grade may cause knocking, but 95 octane is more of a bonus than a necessity for most Roewe vehicles.

[DiEverly]

When I first got my Roewe, I also struggled with this issue. The salesperson enlightened me with one sentence: Check the fuel tank cap! Open the cap and look at the sticker inside—80% of Roewe models state 'Recommended to use unleaded gasoline with an octane rating of 92 or above.' This means 92 is the baseline; using 95 isn't wrong, but there's no need to spend extra money. Here's a little-known fact: occasionally mixing fuel grades won't harm your vehicle, but avoid long-term use of different grades. The best solution I've found is using 92 for daily commutes and switching to 95 before long trips to enhance highway performance. Always double-check the octane number on the receipt to avoid fueling errors.