What is the disadvantage of turbocharger?

When discussing the potential disadvantages of a turbocharger, one of the first considerations is the increased complexity of the engine system. Turbochargers require additional components like a compressor, turbine, intercooler, and associated piping, all of which increase the maintenance requirements and potential for mechanical failure. Additionally, the pressurized air from the turbocharger can lead to higher combustion temperatures, potentially causing engine knocking or detonation if the fuel mixture is not properly tuned. Moreover, turbochargers tend to decrease engine efficiency at lower speeds and loads due to the parasitic drag of the turbine. Furthermore, the boost pressure created by the turbocharger may require specific modifications to the engine's fuel system and engine control unit to ensure optimal performance. Could you elaborate on how these disadvantages might impact the overall performance and reliability of an engine equipped with a turbocharger?