Volkswagen#;s luxury car unit Audi boosted 2001 profit 4.8 percent to a sixth consecutive record as it increased sales and cut investment, Bloomberg News said. Bloomberg said Audi#;s net income rose to 769 million euros ($US665 million) from 734 million euros in 2000, sales rose 10 percent to 22 billion euros and investment dropped 11 percent to 2.15 billion euros.