Clearing the world's most stringent emissions regulations

HYBRID SYNERGY DRIVE pursued outstanding fuel efficiency with the goal to reduce CO2 emissions, and also realised a significant reduction in emissions of other substances in its exhaust gas.

For example, Prius sold in the US complies with the world's most stringent regulation, "AT-PZEV (Advanced Technology Partial Zero Emissions Vehicle) Regulation" of the State of California of the USA, while Prius for the EU market complies with "EURO-IV" regulation implemented in EU from 2005.*

All the models equipped with HYBRID SYNERGY DRIVE have cleared the stringent exhaust gas regulations enforced in various countries of the world.

* Based on calculations derived from in-house measurements.

CO2 emission of the New Prius is 94 g/km, This is a 9.6% reduction in emissions from the old Prius.

Toyota has also adopted a three way catalyst and VVT-i, as well as improving performances of the air-fuel ratio compensator, Electric Spark Advancer, fuel evaporative emission control system and other devices and systems, thereby proactively suppressing generation of emissions and enhancing the capacity to cleanup emissions. Emission standards of NOx (oxides of nitrogen) is 0.010 g/km and HC (hydrocarbons) of the Prius is 0.020 g/km, which are about less than half those of the other cars of the same class equipped with emissions control devices.