Why Penske’s Mercedes Indy 500 engine was so good it was banned

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Penske's 1994 Indianapolis 500 triumph was on paper just one of its 12 wins in a season of CART Indycar domination, but there was a remarkable technology story behind it.

Mercedes and Ilmor exploited a loophole in the regulations to create an extraordinary engine amid absolute secrecy.

Jake Boxall-Legge recounts the tale of the 500I, the engine so good even its creators knew it would be banned after just one race.

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About this article

Series IndyCar
Event Indy 500
Drivers Al Unser Jr. , Emerson Fittipaldi
Teams Team Penske
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