Helmuth Koinigg
All 1 Formula 1 retirement (DNF) of Helmuth Koinigg, from the 1974 United States GP to the 1974 United States GP.
- Career retirements (DNFs)
- 1
- First retirement (DNF)
- 1974 United States GP
- Most recent retirement (DNF)
- 1974 United States GP
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