Nissan Variable Valve Event and Lift (VVEL) is an advanced engine technology designed to optimize performance and efficiency. It allows for precise control of the timing and lift of the engine's valves, adapting to different driving conditions. This means the engine can deliver more power when needed while also improving fuel economy during lighter driving. By adjusting the valve events, VVEL enhances engine responsiveness and reduces emissions. This system works in conjunction with other technologies, such as Nissan's Direct Injection, to provide a smoother driving experience and better overall engine performance.