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The vast majority of automotive electronic control systems utilize printed circuit board technology. Hybrid substrate technology is successfully applied to smaller high volume systems for applications with high demands with respect to temperature range and vibration. In the past few years, the introduction of microcontroller based systems in hybrid technology has succeeded for high volume applications with limited model variety, as for example antiskid (ABS) systems. The newly developed microhybrid technology alleviates the shortcomings of standard hybrid technology regarding complexity, design flexibility and cost of production. This paper discusses two microhybrid systems, an engine management system mounted onto the engine and an antiskid ECU attached to the hydraulic unit.