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Video: Rotax 912iS Efficiency -- Better than Claimed

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When Rotax introduced its high-tech 912iS a year ago, it claimed that the engine would be about 20 percent more fuel efficient than previous 100hp models. But new testing done by the company last year reveals that those claims fell short of the engine's actual efficiency. In this video shot at Aero in Friedrichshafen, Germany last week, Paul Bertorelli reports that the 912iS may improve fuel efficiency by up to 30 percent.

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