What grade of gasoline should the Hongqi HS5 use?
2 Answers
The Hongqi HS5 should use 95-octane gasoline to meet the stability requirements of its engine during operation. The Hongqi HS5 is a mid-size SUV under FAW Hongqi, which also offers models such as the Hongqi H7, Hongqi L5, Hongqi H5, Hongqi HS7, Hongqi EHS3, Hongqi H9, and Hongqi EHS9. Taking the 2019 Hongqi HS5 as an example, its body dimensions are 4760mm in length, 1907mm in width, and 1700mm in height, with a wheelbase of 2870mm. The vehicle features a MacPherson strut front suspension and a multi-link independent rear suspension.
I have done extensive research on the Hongqi HS5. This car requires 95-octane gasoline due to its high engine compression ratio of approximately 10.5:1. Lower-octane fuel can easily cause knocking, which manifests as a pinging sound in the engine and may damage pistons or cylinders over time. Having driven this car myself, I noticed obvious acceleration shudder and increased fuel consumption when using 92-octane gasoline. The manual clearly recommends 95-octane or higher, so I always opt for 95-octane from reputable gas stations, ensuring stable performance and responsive acceleration. It’s also crucial to pay attention to fuel quality—counterfeit gasoline may clog fuel injectors. Regular maintenance checks on the fuel system can extend the engine’s lifespan. Given the significant temperature differences between winter and summer, high-octane fuel is more reliable. While using 92-octane in emergencies is acceptable, don’t make it a habit, as it may lead to higher maintenance costs.
