Here's how it works:
* Base Model: A standard Porsche model, like the 911 Carrera, will not have an "S" designation.
* "S" Model: A Porsche model with an "S" designation, like the 911 Carrera S, has a more powerful engine, upgraded suspension, and other performance enhancements.
However, it's important to note that the "S" designation can have different meanings depending on the specific Porsche model. For example, on the Porsche Panamera, the "S" might refer to a specific engine configuration.
If you are unsure what the "S" signifies on a particular Porsche, it's always best to consult the official Porsche website or a trusted automotive resource.