What type of gasoline should turbocharged cars use?

[SanPresley]

Turbocharged cars use different gasoline grades depending on their displacement. Simply follow the fuel grade specified for the engine. Since turbocharged engines require higher power and torque output with greater efficiency, it is recommended to use 95-octane gasoline, as higher-grade fuel better matches turbocharged engines. These engines endure significant loads during operation, and under the same working pressure, higher-grade gasoline performs more stably under high pressure. The higher the engine's compression ratio, the higher the required gasoline grade, as higher-grade fuel offers better anti-knock performance. This not only enhances engine power but also reduces the likelihood of engine knocking.

[StCaroline]

Over the years of driving turbocharged cars, I've always insisted on using 95 or 98 octane fuel. Turbo engines operate under high pressure and temperature, just like athletes needing high-energy food – they require high-octane fuel with good anti-knock properties. 92 octane fuel has a lower octane rating and may pre-ignite under high temperature and pressure, causing engine knocking and reduced power. At the last car meetup, someone mentioned saving money by using 92 octane, only to have the check engine light come on a month later, costing thousands to repair the turbo. The salesperson specifically reminded me about the fuel grade label on the fuel filler cap when I bought the car – if it says 95, never compromise. Paying attention to fuel quality is also crucial in daily driving; no matter how cheap, low-quality gas from small stations should be avoided.

[OMackenzie]

I've been driving a turbocharged car for five years and only follow the manufacturer's manual for refueling. The compression ratio of turbocharged engines generally exceeds 10:1, and regular gasoline can't withstand the high-pressure environment. Last month, I tested it and found that using 95-octane gasoline made the engine sound smoother during acceleration, and the displayed fuel consumption dropped by 0.3 liters. Don't believe the claim that 92-octane saves money—it might seem fine in the short term, but knocking can quietly damage the piston rings. I remember once on a long trip, I accidentally filled up with 92-octane at a service area, and when I pressed the accelerator harder, I heard a metallic knocking sound. Now it's a habit—I always check the sticker inside the fuel cap before refueling. That's the most reliable.

[OAndres]

As the son of an experienced mechanic, I know turbocharged cars require premium fuel. Most turbo cars today demand at least 95 octane, especially direct injection models. Using lower-grade fuel causes premature detonation in the cylinders - like firecrackers exploding at the wrong time, damaging pistons and reducing power. Recently when helping a neighbor diagnose his turbo car's vibration issue, I discovered he'd been using 92 octane long-term, which had even eroded the spark plug electrodes. I recommend adding a bottle of fuel system cleaner when refueling to remove carbon deposits. During maintenance, ask your mechanic to check the engine data stream - abnormal readings from the knock sensor indicate fuel quality issues.