California's Air Resources Board says the increase in a consent decree filed Thursday brings VW's total settlement in California to $1.3 billion.
Volkswagen Group of America acknowledges rigging 11 million of its vehicles with software used to cheat on vehicle emissions tests.
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The negotiated $1.3 billion final settlement still must be approved by courts.
It includes penalties and payments to help California boost its network supporting cleaner-running electric cars.