Gasoline direct injection (GDI) is a technology used in internal combustion engines to improve fuel efficiency and performance. In GDI systems, fuel is injected directly into the combustion chamber at high pressure, allowing for more precise control of the fuel-air mixture. This results in better combustion, leading to increased power and reduced emissions compared to traditional fuel injection methods. GDI engines can operate more efficiently across various driving conditions, making them popular in modern vehicles. However, they may require additional maintenance due to potential carbon buildup on the intake valves, which can affect engine performance over time.