The new 911 GT3 meets the strict Euro 5 emission standard in the EU and LEV II in the USA. Vehicles manufactured by Porsche demonstrate that even high-performance sports cars can achieve moderate emission values in their respective category. This puts the new 911 GT3 among not only the most powerful sports cars of the future, but also the cleanest.
This has been accomplished not least by the two catalytic converters and stereo Lambda control circuits, which monitor each cylinder bank separately. For each exhaust tract, two Lambda sensors regulate the composition of the exhaust gas. Another Lambda sensor for each cylinder bank monitors pollutant conversion in the respective catalytic converter.