How Much Power Does 1.5T Equivalent to in Liters?

[GeorgeRose]

Mainstream 1.5T engines generally deliver power levels comparable to 2.0L naturally aspirated engines. Here are the relevant details: 1. Engine Displacement: A 1.5L displacement refers to the cylinder volume, which is the sum of the volume from the piston's top dead center to bottom dead center plus the combustion chamber volume. 2. Turbocharging: The 'T' stands for Turbo, indicating an engine equipped with a turbocharging device. The turbocharger modifies the engine's air intake, enabling more complete fuel combustion in the cylinders, thereby increasing power output. Compared to engines of the same displacement, turbocharged engines offer advantages such as greater power output, lower fuel consumption, and better environmental performance.

[LaHarmony]

Regarding the equivalent displacement of a 1.5T engine compared to a naturally aspirated one, based on my years of experience with various car models, it really depends on the specific tuning. For example, I've tested the 1.5T in the Honda Civic, which delivers 182 horsepower—comparable to many 2.4L naturally aspirated engines. Meanwhile, the low-power version of Volkswagen's EA211 1.5T roughly matches the performance of a 2.0L naturally aspirated engine. The core principle of turbocharging is to use exhaust gases to drive the turbine, forcing more air into the 1.5L small-displacement engine, improving fuel efficiency by about 30%. However, it's worth noting that turbo engines can feel slightly laggy at low RPMs, lacking the linearity of naturally aspirated engines. For daily city driving, a 1.5T engine typically saves around 2L in combined fuel consumption compared to a 2.5L naturally aspirated engine, with an even more noticeable difference during highway cruising.

[IsabelleDella]

Last time when accompanying my friend to choose a car, I specifically compared the mainstream 1.5T engines, which generally deliver between 170-200 horsepower. For example, the 1.5T engine in the Changan CS75PLUS produces 188 horsepower, and it feels noticeably more powerful than the older 2.0L CRV. The turbo kick-in around 2000 RPM provides a particularly obvious sense of acceleration, though the engine noise during cold starts is louder compared to naturally aspirated engines. In practical use, I found that the 1.5T engine maintains RPM below 2000 on highways, making it much quieter than naturally aspirated engines with similar power levels. However, turbocharged cars require special attention to timely oil changes during maintenance, otherwise, the turbo bearings are prone to issues.

[DelChloe]

The principle of the 1.5T turbocharging is to increase oxygen content by compressing air, resulting in more complete combustion. Typically, for every 0.5bar increase in boost pressure, power can be improved by about 40%. Currently, mainstream 1.5T engines operate within a boost range of 1.2-1.5bar, with horsepower generally reaching 160-190hp. This already surpasses the 150-160hp level of most 2.0L naturally aspirated engines. However, it's important to note in actual driving that the power degradation of small-displacement turbocharged engines at high altitudes is more noticeable compared to larger-displacement naturally aspirated engines. When choosing a car, it is recommended to focus on the maximum torque value and the rpm at which it is delivered. For example, a certain model can deliver 260Nm of torque at just 1750rpm, and this characteristic of high torque at low rpm is more suitable for urban driving conditions.