What is the equivalent turbocharged engine to a 2.4L naturally aspirated engine?

[Lulu]

2.4L naturally aspirated engine is equivalent to a 1.8T turbocharged engine. The following is an introduction to naturally aspirated engines: 1. Introduction: Naturally aspirated (English: Normally-Aspirated) is a type of car air intake, which is a form where air is forced into the combustion chamber by atmospheric pressure without any supercharger. 2. Working principle: Current engines can be divided into naturally aspirated and supercharged types, among which supercharged types can be further divided into mechanical supercharging, turbocharging, and the latest pressure wave supercharging. Naturally aspirated engines do not have a supercharger, meaning that air simply passes through the air filter-throttle-intake manifold-to the "cylinder". Gasoline is directly injected into the intake manifold through the fuel injector (usually electronic fuel injection, with the latest technology being direct cylinder injection).

[Angel]

As a veteran driver with 20 years of experience, I have personal insights on this issue. Based on my experience, the power delivery of a 2.4L naturally aspirated engine is roughly equivalent to that of a 1.5T to 1.8T turbocharged engine. The actual performance depends on engine tuning - for example, the old Camry 2.4L produces about 167 horsepower, while the Hyundai Tucson 1.6T delivers 180 horsepower, and the Honda CR-V's 1.5T makes 193 horsepower. In real-world driving, turbocharged cars show stronger explosive power around 2000 rpm, but the 2.4L naturally aspirated engine provides more linear and smoother acceleration. Many current 1.5T models can indeed match or even exceed the performance of 2.4L engines, though naturally aspirated engines still demonstrate better endurance at highway speeds. I recommend focusing on mid-range acceleration feel during test drives.

[LeDaisy]

I previously compared the specifications of many car models and found that this conversion depends on the specific scenario. For urban commuting, the 2.5L naturally aspirated engine in the Mazda CX-5 with about 187 horsepower doesn't feel much different from the 1.6T Ford Kuga's 180 horsepower when driving. However, turbocharged cars have a characteristic: at low speeds, they always feel like they're holding back some power, and once the turbo kicks in, it's like being kicked in the back. On the other hand, a 2.4L naturally aspirated engine provides a consistent push from start to finish. I've tried driving on mountain roads, and turbocharged cars deliver power more directly when climbing, but at the cost of higher fuel consumption. Nowadays, the new 1.5T models can generally match the performance of older 2.4L models, but naturally aspirated engines still have a slight edge in reliability.

[VanBrantley]

In terms of simple displacement conversion, there's an empirical formula in the automotive world: the displacement of a turbocharged engine multiplied by 1.5 roughly equals the power level of a naturally aspirated engine. Therefore, reversing the calculation, a 2.4L naturally aspirated engine corresponds approximately to a 1.6T turbocharged engine. However, this calculation is quite rough, and the actual horsepower value should be considered. For example, the Hyundai Santa Fe's 2.4L engine produces 185 horsepower, while the Volkswagen T-Roc's 1.5T engine delivers 160 horsepower, showing a noticeable difference between the two. I recommend paying attention to the maximum torque RPM. Turbocharged cars typically reach peak torque between 1,500 and 4,000 RPM, whereas a 2.4L naturally aspirated engine only fully delivers its power above 4,000 RPM.