Private company

Spiess Tuning

Spiess Tuning is the common identity of Siegfried Spiess Motorenbau GmbH, a motor vehicle engine company based in Ditzingen, Baden-Württemberg, Germany. Siegfried Spiess Motorenbau GmbH is a family-run company that develops, manufactures and services its own high-performance engines in second generation.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Spiess Tuning is the common identity of Siegfried Spiess Motorenbau GmbH, a motor vehicle engine company based in Ditzingen, Baden-Württemberg, Germany. Siegfried Spiess Motorenbau GmbH is a family-run company that develops, manufactures and services its own high-performance engines in second generation.2

Sources

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