Gasoline Direct Injection (GDI) enhances fuel efficiency and power by injecting fuel directly into cylinders, enabling downsizing and turbocharging. However, it faces challenges like high particulate matter emissions, intake valve deposits, high-pressure system complexity, and Low-Speed Pre-Ignition (LSPI). Mitigation includes Gasoline Particulate Filters (GPFs), dual injection, advanced injectors, and improved engine controls, balancing performance and emissions.