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In page Plug-in hybrid:

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When the Toyota Prius Plug-in Hybrid launched in January 2012, Japan's eco-car subsidy program was in effect from December 2011 through September 2012.[1] The program provided subsidies of ¥100,000 for purchasing an environmentally friendly vehicle, or ¥250,000 when trading in a vehicle 13 years or older.[citation needed]