What is the fuel consumption of the Tang DMI at 120 km/h on the highway?
2 Answers
The comprehensive fuel consumption of the Tang DM is 9L/100km. The above is the NEDC comprehensive fuel consumption, which is the data of comprehensive operating condition fuel consumption measured under the NEDC test procedure. The actual fuel consumption is higher than this value, ranging from 6.1-6.6L/100km. The level of a car's fuel consumption is directly related to five major factors: driving habits, the car itself, road conditions, natural wind, and environmental temperature. The specific factors that can increase a car's fuel consumption are as follows: Driving habits: Aggressive driving, such as sudden acceleration, frequent overtaking, and not easing off the throttle in advance when approaching a red light, can increase fuel consumption. The car itself: Cars with larger displacements consume more fuel than those with smaller displacements because larger displacements generally mean greater power, requiring more gasoline to burn and perform work. Cars with greater self-weight have higher fuel consumption because greater self-weight requires larger driving torque. Road conditions: Dirt roads, muddy roads, soft surfaces, mountain roads, etc. Driving on these surfaces increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases the car's resistance and fuel consumption. Low environmental temperature: When the engine block temperature is low, the gasoline injected during cold starts is less likely to atomize, requiring more gasoline to be injected for combustion, thus increasing fuel consumption. At the same time, low temperatures cause the engine computer to control the engine to run at higher RPMs to warm up, which also increases fuel consumption.
I've been driving the BYD Tang DM-i for quite some time. When cruising at 120 km/h on the highway, the fuel consumption typically ranges between 7 to 8 liters per 100 km, depending on weather and road conditions. I've tested it several times—on sunny days with a tailwind, it can drop as low as 7.2 liters, but in strong winds or uphill sections, it may spike above 8 liters. This is because highway wind resistance doubles, increasing engine load, unlike city driving where electric mode saves fuel. The car is designed with a primary focus on electric power, so the engine takes over more on highways with less battery assistance, leading to a noticeable rise in fuel consumption. I recommend using cruise control, avoiding aggressive acceleration, maintaining proper tire pressure, and clearing roof clutter to reduce drag. After optimizing, I often stabilize consumption around 7.5 liters—not as efficient as low-speed driving but far better than traditional SUVs. Before long trips, check AC settings and use recirculation mode wisely for extra savings. Overall, it strikes a practical balance.
