Use the same Champion plugs the factory installed.
The spark plug gap on a 2003 Chrysler PT Cruiser with turbo is between .40 and .50. The difference is in the type of plug used.
R134a
5w30
Red, 5 year, HOAT type.
Red, 5 year, HOAT type.
R134aR134a
Dot 3
NGK CR9EK spark plugs, four total
Red, 5 year, HOAT type
Red, five year, hoat type.
Red, five year, hoat type.
Red, 5 year, HOAT type