* 2.0L Zetec: Around 130 horsepower
* 1.8L Zetec: Around 113 horsepower
* 2.3L Duratec: Around 155 horsepower (less common in 2003)
To know the exact horsepower of a specific 2003 Ford Focus, you'd need to check the vehicle's documentation or the sticker on the engine bay (if still present).