Which is more fuel-efficient, 1.5L or 1.5T?
2 Answers
1.5L is more fuel-efficient. 1.5T refers to a turbocharged engine, while 1.5L refers to a naturally aspirated engine. With the same displacement, a naturally aspirated engine is more fuel-efficient than a turbocharged engine. Displacement: Displacement refers to the volume of space that the piston moves through from the top dead center to the bottom dead center, known as the cylinder displacement. If the engine has multiple cylinders, the sum of all cylinder volumes is called the engine displacement. Advantages: Naturally aspirated engines have a longer lifespan, while turbocharged engines offer higher output power and torque. Naturally aspirated engines provide more linear and smoother output. For example, Rolls-Royce uses large-displacement naturally aspirated engines, while turbocharged engines are typically used in racing models. An engine is a machine that converts other forms of energy into mechanical energy.
After comparing data from many car models, the fuel consumption of 1.5L and 1.5T engines each have their own advantages. In city traffic jams, the 1.5L naturally aspirated engine is more fuel-efficient because the turbo isn't engaged and the body is lighter. But on highways or national roads, the advantage of the 1.5T turbocharged engine becomes apparent—it maintains lower RPM at the same speed. For example, a certain brand's 1.5T model consumes only 5L of fuel during highway cruising, about 0.8L less than a naturally aspirated engine of the same displacement. However, turbocharged cars are more expensive to maintain, requiring full synthetic oil. Overall, if you frequently drive long distances, choosing a turbocharged (T) model is more cost-effective. If you mainly drive in the city, a naturally aspirated (L) engine is better. It also depends on your driving habits—if you often floor the accelerator, a turbocharged engine might actually consume more fuel.
