Audi is rolling out a new version of its Quattro all-wheel-drive system that promises an efficiency improvement of at least 5 percent—more on the highway. Available exclusively on the VW Group’s modular-longitudinal platform, the new system, which Audi calls Quattro Ultra, decouples the rear axle when it’s not needed. Fewer moving parts equals less friction. […]
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Quattro Ultra: Audi’s New, More Efficient AWD System
