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Motor1
Motor1
Sport
Brian Potter

This BMW M5 Hides A Secret Volkswagen W10 Engine, Heading To Auction

  • Broad Arrow will auction the prototype E39 M5 at Zoute Concours in Knokke-Heist on October 9, 2026, estimated $285,000–$400,000.
  • The naturally aspirated, all-aluminum 5.0-liter W10 is rated at 473 hp.
  • Only three Volkswagen W10 engines were ever built.

Only one road-going car has ever carried a Volkswagen W10 engine, and it wears an E39 BMW M5 body. Broad Arrow Auctions will offer the prototype at its Zoute Concours sale in Knokke-Heist, Belgium, on October 9, 2026, carrying an estimate of €250,000 to €350,000 (about $285,000 to $400,000).

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