Rde 3.1.7

| Regulation | Lab Limit (NOx) | RDE CF | Effective RDE Limit | Introduction | | :--- | :--- | :--- | :--- | :--- | | Euro 6b | 80 mg/km | N/A | N/A | Sept 2014 | | Euro 6d-TEMP (RDE 2) | 80 mg/km | 2.1 | 168 mg/km | Sept 2017 | | | 80 mg/km | 1.43 | ~114 mg/km | Jan 2020 (new types) |

Introduction: The Evolution of Vehicle Emissions Testing For decades, laboratory tests like the NEDC (New European Driving Cycle) and later the WLTP (Worldwide harmonized Light vehicles Test Procedure) were the gold standards for measuring vehicle emissions. However, a glaring problem persisted: cars that passed lab tests with flying colors often emitted significantly higher levels of pollutants—particularly nitrogen oxides (NOx) and particulate matter—on real roads. rde 3.1.7

However, RDE 3.1.7 is not the final destination. As measurement technology improves and environmental targets become stricter, the "conformity factor" will approach 1.0. But history will remember RDE 3.1.7 as the version that finally closed the gap between the lab and the road—making it one of the most influential technical standards of the 21st-century automotive industry. If you are looking to verify whether a specific vehicle model complies with RDE 3.1.7, check its Certificate of Conformity (CoC) or the EU’s public type-approval database. Look for "Euro 6d" and the phrase "RDE 3.1 compliant" in the emissions section. | Regulation | Lab Limit (NOx) | RDE