Written by Dan Johnson (see his aviation blog at ByDanJohnson.com) it concludes that Rotax is by far the world’s biggest aviation engine manufacturer, with well over 50,000 four-stroke and over 120,000 two-stroke aircraft engines delivered to date. As a result, their annual engine sales can be used as a barometer for the recreational/LSA market as a whole, as other manufacturers like Lycoming and Continental are not really players in this market.
Dan makes some interesting remarks around the different proportions of LSA versus GA registrations in the USA in comparison with the rest of the world. In the USA, the GA-LSA ratio is 80-20, while in the rest of the world the ratio is reversed: 20-80 in favour of LSAs. He comments that this is probably because GA is relatively cheap in the USA and perceived to be very expensive elsewhere. (Tell me about it!). Although USA is the biggest single LSA market, nearly twice as many LSAs are actually sold outside the USA.
Other influencing factors in the USA may be that many aircraft service centres are unfamiliar with Rotax engines and some don’t even have access to the metric tools needed on the engine. Contrast that with Europe – and even Australia – where the Rotax is now a familiar engine.