Which cars require 98 octane gasoline?

[LondonAnn]

Cars that must use 98 octane gasoline: 1. Vehicles with a compression ratio of 10 or higher; 2. European luxury cars with sophisticated engines and complex electronic systems, as well as high-performance sports cars; 3. Vehicles with fuel tank caps labeled "Please use 95 octane or higher gasoline." Unless your car meets these conditions, it is not recommended to use 98 octane gasoline. 98 octane gasoline is a high-quality fuel under China's National V standard. When filling up for the first time, owners do not need to drain the remaining fuel in the tank or clean the tank. It is recommended to consume as much of the existing gasoline as possible before the first refill of 98 octane gasoline, avoiding too much residual fuel. After the second or third refill with 98 octane gasoline, the vehicle will complete a "natural upgrade."

[LillianRose]

Seeing this question, I think some high-performance cars indeed require 98-octane gasoline. This mainly applies to sports car brands like Ferrari, Lamborghini, or Porsche 911. Their engines have high compression ratios, and lower octane ratings can easily cause knocking, damaging pistons and cylinders. I once drove a friend's Porsche, and the manual clearly stated the requirement for 98-octane fuel, with no option to switch to lower grades. Forcing 95-octane fuel not only reduces performance but may also trigger warning lights, leading to expensive repairs. Regular family cars are much more flexible, as 95-octane is perfectly sufficient. However, those speed-focused vehicles must adhere to this rule to ensure smooth engine operation.

[SanKing]

I believe high-performance cars must insist on using 98-octane gasoline. Sports cars like Ferraris or high-end sedan models such as Mercedes-AMG have engines that are very sensitive. Insufficient octane levels can lead to unstable combustion. I've followed automotive forums for many years, and owners consistently say that using the wrong fuel can shorten engine lifespan and even affect acceleration. These cars are expensive, and saving a bit on fuel during maintenance isn't worth the increased risk. For regular SUVs or economy cars, it doesn't matter as much. I recommend carefully reading the manual before buying such vehicles to know what fuel to use.

[LaMariana]

As far as I know, cars that require 98-octane gasoline are mostly sports cars, such as Lamborghini or Porsche. These engines have high compression ratios, and low-octane fuel can easily cause knocking, damaging components. If 95-octane fuel is used, the car may shake, affecting the driving experience. For regular cars, lower-octane fuel is sufficient, so there's no need to overthink it. Although 98-octane is more expensive, it's a must for high-performance vehicles.

[VanMadelyn]

I think some high-performance cars absolutely require 98-octane gasoline. This mainly applies to models with high compression ratios or turbocharged engines, such as BMW M series or Audi RS. Low-octane fuel can cause knocking and damage internal components. Using 98-octane improves combustion efficiency and reduces issues. I've noticed owner's manuals emphasize this point, and ignoring it could lead to expensive repairs. Regular sedans aren't so particular about this.

[DeJasper]

I've been driving for many years, and high-performance sports cars must use 98-octane gasoline. Brands like Ferrari and Lamborghini require high-octane fuel to prevent engine knocking. If you use lower-grade fuel, performance drops immediately and it may even damage the car. Although 98-octane is more expensive, it's a necessary investment for these vehicles to avoid major repairs. Regular family cars can use 95-octane fuel, which is both economical and safe.