The EGAS system is a turnkey emissions analysis system that can continuously and simultaneously measure various engine emissions including THC, CH4, NO/NOX, CO, CO2, O2, CO2 EGR and NH3. It features modular design and components for simplified maintenance. The system includes a mobile sampling trolley with built-in pump and allows for open integration of different analyzer types. It can measure emissions from all combustion engines regardless of fuel type in compliance with various regulations.