The Concept

The SMART turbo motor was conceived and developed by Daimler Chrysler as a radical new approach to the drive system for the new City Coupés. This project aimed at setting new standards in production by focusing particularly on the weight and therefore the ecological impact of the car.
The technology implemented by Mercedes-Benz for the design of this motor made it equally interesting for aircraft construction:
 

Ultra compact, noise-optimized,
complete aluminum construction; dual ignition concept.

Intensive testing even at continuous full load under all climatic conditions over distances of several million automobile km, and numerous "more than" 1000-hr tests on the testing stations.

The turbo technology with boost control planned from the very beginning of the basic motor concept provides full motor continuous power even at altitudes of 2500m.

The torque characteristics in combination with the "overboost" ensure that high power is provided from the very start, even without a variable pitch propeller.
 

Fully electronic characteristics control modes and operation monitoring with emergency auxiliary functions ( E-Gas, electronic spark control, mixture control, altitude adaption.....)

State-of–the-art Bosch fuel injection system (carburetor icing not possible), electronically controlled 3-way catalytic converter with Lambda sensor.

What could have been more obvious than to use this motor concept as the basis for a forward-looking airplane engine?