The Rotax 915 iS is a turbocharged four-stroke aircraft engine producing 141 horsepower with electronic fuel injection and digital engine management. It delivers strong performance and efficiency even at high altitudes while maintaining low weight and fuel consumption. The engine combines modern technology and reliability, setting a new standard for light aircraft propulsion.

The Rotax 915 iS is an advanced turbocharged aircraft engine, representing an important step between the popular 912 iS and the more powerful 916 iS. The engine combines high performance, low weight, and modern electronic control, and is designed for light sport aircraft, experimental planes, gyroplanes, and ultralights that demand reliable power at higher altitudes and under demanding conditions.

The Rotax 915 iS is a four-stroke, four-cylinder boxer engine, both liquid- and air-cooled, with a displacement of 1352 cm³, producing 141 horsepower (104 kW) at 5800 RPM. Its key innovation is the turbocharger, which maintains full power up to around 15,000 feet (4,500 meters). This provides excellent climb performance, higher top speed, and steady power delivery even in thin air, making the engine a popular choice among modern light aircraft manufacturers.

It features electronic fuel injection (iS – “injection system”) and a dual ECU (Engine Control Unit) system that precisely manages ignition, mixture, and engine speed. The FADEC (Full Authority Digital Engine Control) system ensures optimal combustion, reduced fuel consumption, and simplified engine management by automatically adjusting performance based on altitude and load. It also offers built-in engine protection against misuse or overloading.

With a dry weight of about 82 kg, the 915 iS has an excellent power-to-weight ratio. It runs on both AVGAS 100LL and unleaded automotive fuel (MOGAS), with a typical fuel consumption of 20–25 liters per hour in cruise, depending on aircraft and configuration.

Designed to meet modern aviation’s requirements for efficiency, performance, and sustainability, the Rotax 915 iS is used in the ICP Ventura 4 and in aircraft from Pipistrel, BRM Aero, Sling Aircraft, Tecnam, and others. By combining turbocharging, electronic management, and lightweight construction, it gives pilots of small aircraft access to power and performance previously reserved for much larger engines.

In summary, the Rotax 915 iS represents a perfect balance of power, efficiency, and technology. It sets a new benchmark for light aircraft engines and demonstrates Rotax’s ongoing commitment to innovation, digital precision, low weight, and outstanding reliability.