Should the Buick Regal Use 92 or 95 Octane Gasoline?

[OAsher]

Whether the Buick Regal should use 92 or 95 octane gasoline depends on the specific model: 1. The 1.5T model uses 92 octane gasoline; 2. The 2.0T model uses 95 octane gasoline. Taking the 2020 Buick Regal as an example, its body structure is a 4-door, 5-seat sedan with dimensions of 4904 mm in length, 1863 mm in width, and 1461 mm in height, with a wheelbase of 2829 mm and a fuel tank capacity of 55 liters. The 2020 Buick Regal is equipped with a 1.5T turbocharged engine, delivering a maximum power of 124 kW and a maximum torque of 250 Nm, paired with a 9-speed automatic transmission.

[VonArabella]

I've been driving a Buick Regal for several years. Most configurations of this model come with turbocharged engines, and the manual typically recommends using 95-octane gasoline to effectively prevent engine knocking. Higher octane fuel ensures more stable power output at high compression ratios, reducing the likelihood of engine vibration or sluggish acceleration. While 92-octane fuel is cheaper, long-term use may increase fuel consumption or lead to carbon buildup issues, resulting in higher maintenance costs. I've checked the user manual, and the new Regal basically requires 95-octane as the minimum standard, with 92-octane acceptable for emergency use occasionally, but don't make a habit of saving money by ignoring this. Different driving conditions, such as highway cruising or city traffic congestion, also affect actual performance. Ensuring you fill up with high-quality gasoline from reputable gas stations is safer, prevents wasting money on fuel, protects your beloved car, extends its lifespan, and avoids potential trouble from faults.

[Cunha]

I think whether to use 92 or 95 depends on personal budget and the car's condition. Some older Buick Regal models can use 92-octane fuel to save a few bucks, but newer models generally recommend 95-octane as the standard for turbocharged engines. I've calculated that filling up once a week with 92 instead of 95 saves over ten yuan, adding up to hundreds long-term, but potential engine damage could lead to major repairs costing tens of thousands—not worth it. I've seen a friend insist on using 92 to save money, only to end up with sluggish performance and increased fuel consumption, costing more in the long run. Occasionally mixing by mistake isn't a big deal—the engine adapts—just don't do it frequently. For daily driving, following the manual's recommendation of 95-octane offers better value: smoother operation, quicker response, and significantly improved driving experience. It's safer and more reliable, with actual benefits outweighing those minor savings.

[SanMaggie]

My decades of driving experience, including with the Buick Regal, is that refueling mainly depends on the user manual recommendations. Some Regal models are suitable for 92-octane gasoline while others require 95-octane—it specifically depends on the production year and configuration, so don't blindly follow others' advice. Using the correct octane rating ensures smooth engine operation and prevents knocking issues, such as sluggish acceleration or increased fuel consumption. The fuel cap also has a label with this information. I make it a habit to use the same brand of gasoline to maintain consistent octane levels and minimize discomfort caused by fuel variations. In daily use, 92-octane is fine if permitted, but 95-octane is safer and can extend engine life. Regular inspections and maintenance are even more crucial—don’t overlook these basic steps.

[MacElijah]

My Buick Regal has always been fueled with 95-octane gasoline as per the manual. Higher octane provides better engine protection, smoother and quieter operation, and avoids safety risks. While 92-octane is cheaper, using lower-grade fuel in a vehicle requiring premium may cause power deficiency or engine instability, affecting driving experience especially at high speeds. I prefer sticking to the same gas station brand for reliable quality. Mixing different octanes occasionally is fine, but not recommended long-term. For convenience and peace of mind, check the fuel cap label or manual to confirm requirements - this prevents accidental damage and saves future repair costs/time. Family passengers will also appreciate the comfortable, worry-free ride. Following these basic rules is simple yet practical.