Which has lower fuel consumption, 1.2T or 1.5T?
2 Answers
Under the same conditions, the 1.2T engine is definitely more fuel-efficient than the 1.5T. Generally, the larger the displacement, the higher the fuel consumption. However, there is no direct conversion formula between the two because many factors affect fuel consumption. Factors influencing a car's fuel consumption include: 1. Driving on bumpy roads consumes more fuel, as prolonged driving in low gear inevitably increases fuel consumption. 2. Overloading the trunk with heavy items leads to higher fuel consumption. 3. Incorrect driving habits can double or even triple fuel consumption. 4. Driving at high speeds in low gear consumes more fuel. 5. Poor engine maintenance increases fuel consumption. Issues in the engine ignition system, such as incorrect ignition timing, leaking high-voltage wires, or spark plug carbon buildup, reduce combustion efficiency and raise fuel consumption. 6. Insufficient tire pressure results in higher fuel consumption. 7. Neglecting regular car maintenance leads to increased fuel consumption.
I've driven quite a few cars, including 1.2t and 1.5t models. From my experience, which one has lower fuel consumption isn't absolute—it depends on your driving environment. In the city, the smaller 1.2t engine, like during stop-and-go commutes with frequent starts and stops, doesn't need to work as hard, so it naturally consumes less fuel, averaging around 5-6L per 100km. But on highways or when carrying some luggage, the 1.2t has to turbocharge aggressively to keep up, which can actually lead to higher fuel consumption. On the other hand, the 1.5t has ample torque, maintains stable cruising speeds at lower RPMs on highways, and might even consume less fuel than the 1.2t. Vehicle weight also plays a big role—a lighter car paired with a 1.2t is most cost-effective, but SUVs and other larger vehicles with smaller engines tend to burn more fuel. My advice: test different scenarios, check official fuel consumption reports when choosing a car, and consider your daily routes. Driving habits also matter—smooth, steady driving saves much more fuel than sudden braking and hard acceleration.
