Before BMW offered the free maintenance program, only about 42% of customers got service at the dealership.

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The CPUC requires that all carriers have a preventive maintenance program and maintain a daily vehicle inspection report, Prosper said.

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This helps it land at No. 2 on the list, despite BMW's fairly comprehensive free scheduled-maintenance program for all models.

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Those include replacing management personnel, hiring more auditors in the maintenance program and setting up two maintenance technical teams, one in Atlanta and a second at Dulles International Airport.

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In another case (EPA's safe harbor for routine maintenance under the New Source Review program), our action has been stayed by a federal court pending review of the rulemaking on the merits.

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As the sole customer for the two engines, the government must cover all the costs of designing a second engine, developing and testing it, equipping and manning a second production line, funding a second supplier network, and sustaining a parallel maintenance and support infrastructure across the lifetime of the program.

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