What are the disadvantages of turbocharged engines

After supercharging, the pressure and temperature of the running engine are greatly increased, and the mechanical properties and lubrication properties are also affected. So the life of a turbocharged internal combustion engine will be shorter than a non-supercharged engine of the same displacement.

In order to ensure that the supercharged engine can work reliably and durably under high mechanical and thermal loads, it is necessary to make the necessary changes in the selection of the main thermal parameters of the engine, structural design, materials and processes. The fact that this change process is quite difficult in practice and that the matching of the supercharger to the engine has to be taken into account also limits the application of turbocharging technology in engines.

Turbocharged engines have one drawback that timing-seeking car owners can't tolerate, and that's a lag in power delivery response. There's a time lag between stepping on the gas and pressing more air into the engine as the impeller rotates at high speed, and it's not a short one. Typically, improved turbos take at least 2 seconds to increase or decrease inlet pressure.

Major turbocharger manufacturers are upgrading their turbos, but because of their construction, the driving experience of a turbocharged car is different from that of a large-displacement car. So if you're looking for an intense driving sensation, a turbocharged engine isn't really suitable.

The turbo doesn't always kick in. In fact, it's often driven around town. The turbo has very little chance of kicking in during daily driving. Without the turbo, the 1.8T is not as good as the 1.8, as the un-started turbo may even have some drag on the intake.