New Audi models sold in Europe will be in compliance with the latest Euro 6d-ISC-FCM emissions standards effective immediately. There are currently 193 engine/transmission variants certified as per this new standard, with a few additional models to follow in Q1 2021.
The German carmaker says that nothing will be removed from its portfolio as a result of this switch, which they pulled off despite the challenges of the COVID-19 crisis.
If you think that 193 drivetrain combinations sounds like a lot, consider that the A4 and A5 family alone has a total of 58 engine/transmission variants, which are then categorized by body style (sedan, Sportback, Avant).
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While the Euro 6 emission standard has been in effect since 2015, enforcing limits of 80 mg/km of nitrogen oxides (128.7 mg/mi) for diesels and 60 mg/km (96.9 mg/mi) for gasoline engines, this new Euro 6d-ISC-FCM standard has a much stronger focus on Real Driving Emissions (RDE).
Euro 6d cars must comply with limits even during RDE tests, which are performed out on the road under defined conditions. This standard also requires an on-board fuel consumption monitoring system, which Audi has implemented in the form of software in the engine control unit (ECU).
Audi uses twin-dosing technology to help diesels of all configurations stay within limits, while gasoline models use rather voluminous filters in order to reduce particulate emissions by up to 90 percent.
Up until now, the European union has managed to raise the requirements for measurement methods, cycles, procedures and boundary conditions with every new standard introduced, so we can expect more of the same in the future.