What is the difference between car displacement with and without a 'T'?

[DeSamantha]

The difference between cars with a 'T' and those without is that cars with a 'T' are equipped with a turbocharged engine, while those without are not. The advantages and working principles of turbocharging are as follows: Advantages of turbocharging: The biggest advantage of turbocharging is that it can significantly increase the engine's power and torque without increasing the engine displacement. When an engine is equipped with a turbocharger, its maximum output power can increase by approximately 40% or more compared to an engine without a turbocharger. Working principle of turbocharging: A gasoline engine relies on the combustion of a combustible mixture of gasoline and air in the cylinder to generate power. The output power and torque of an electronically fuel-injected gasoline engine depend on the amount of air entering the cylinder. When the engine's performance is already at its optimal state, the only way to increase its output power is by compressing more air into the cylinder to increase the amount of the combustible mixture.

[ColinRose]

I've driven both turbocharged (with T) and naturally aspirated (without T) cars, and the key difference lies in power delivery. Turbocharged engines utilize a turbocharger to compress air, allowing more oxygen into the combustion chamber—delivering greater power from smaller displacements. The throttle response is aggressive with strong acceleration push, making overtaking exhilarating. Naturally aspirated engines run smoother, with minimal startup noise and silkier driving dynamics, ideal for city traffic or daily commutes. Turbo models offer better fuel efficiency and lower emissions, but require regular turbo component maintenance to prevent overheating issues. Naturally aspirated engines are simpler, more durable, and cheaper to maintain, though performance enthusiasts might find them less thrilling. My recommendation: choose based on needs—thrill-seekers should try turbocharged, while relaxed drivers will appreciate naturally aspirated models. Both have merits without compromising safety.

[EmmettDella]

From an economic perspective, turbocharged (T) engines can save some fuel costs. I've driven a 1.5T car before—small displacement but capable of delivering high horsepower, effortless on highways, and able to cover dozens more kilometers per tank. However, turbocharging systems require careful maintenance, and repairs can be quite expensive. A friend's car cost over a thousand last time. Naturally aspirated engines without turbos don't have these complexities—they're simpler and more reliable. For example, my old non-turbo car ran for seven or eight years without major issues, with much lower costs. It's slower off the mark and struggles a bit on slopes, but it's smooth and worry-free, perfectly adequate for city driving. When choosing a car, don't just look at the displacement numbers. Turbocharged models might be more eco-friendly but come at a higher price, while non-turbo options are more affordable and durable—weigh your wallet and preferences.

[DelKai]

As a novice driver, I prefer naturally aspirated (non-turbo) cars. They start smoothly, accelerate without sudden jerks, and are easier to handle when turning and parking, without any unexpected surges that might make you nervous. Turbocharged (T) models deliver much more powerful performance – a single press on the accelerator can make the car shoot forward, but they tend to be noisier and can easily make passengers carsick in congested traffic. Turbo models are usually more expensive with complex technology, while naturally aspirated ones are simpler and more affordable. When I was learning to drive, I used a naturally aspirated Ford, which felt perfectly suited for daily use.