Original: It was not until the introduction of the new Cosworth unit, badged as a Ford Zetec-R, that Michael Schumacher won the Drivers World Championship with Benetton, in 1994.
Simplified: A new Cosworth unit, badged as a Ford Zetec-R was built in 1994. That year, Michael Schumacher won the Drivers World Championship with Benetton.