NSU Motorenwerke controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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1967
Ro 80 rotary-engine reliability crisis
Early Ro 80 vehicles experienced frequent rotary-engine failures, including problems associated with rotor apex seals. The failures damaged customer confidence and the brand's reputation, while the high cost of rotary-engine development contributed to NSU's financial vulnerability.