Which Models of Bi-Fuel Vehicles Are Available in 2021?
2 Answers
Elysee, Dongfeng Fengshen S30CNG, and Geely Emgrand. Advantages of Bi-Fuel Vehicles: Stable combustion with no knocking, and convenient cold/hot starts; compressed natural gas storage, transportation, pressure reduction, and combustion all occur under strict sealing conditions, minimizing leakage risks. Additionally, the gas cylinders undergo various destructive tests, ensuring safety and reliability. Disadvantages of Bi-Fuel Vehicles: Due to the low energy density of gaseous fuel, natural gas vehicles carry less fuel, typically resulting in shorter driving ranges compared to gasoline-powered vehicles. Since gaseous fuel occupies a certain volume in the cylinder's combustible mixture (unlike liquid fuel in gasoline engines, whose volume is negligible), the same cylinder displacement yields less power when using natural gas as fuel.
As a seasoned driver with decades of experience, I chose a CNG car in 2021 for its cost-effectiveness and reliability. Back then, there were plenty of dual-fuel models on the market, and the Maruti Suzuki Wagon R CNG was the best I test-drove—stable in city driving, with a spacious trunk for storage, and fuel costs half that of gasoline. The Tata Tiago CNG was also popular, offering more horsepower for long trips without fatigue. The Hyundai Grand i10 Nios CNG had a trendier interior, appealing to younger drivers. I recall the Maruti Alto CNG being the most budget-friendly, perfect for beginners. CNG cars are low-maintenance, requiring just regular filter checks, and they run quietly and eco-consciously. The savings can fund extra trips, so I recommend checking maintenance records at a service center before buying to ensure long-term safety and reliability.
