Video: Rotax 912iS Efficiency — Better than Claimed

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Key Takeaways:

  • Rotax's 912iS engine, initially projected to be 20% more fuel efficient, has demonstrated an actual fuel efficiency improvement of up to 30% according to new testing.
  • This updated, higher fuel efficiency figure for the Rotax 912iS engine was reported by Paul Bertorelli from Aero in Friedrichshafen, Germany.
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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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