* 2.5L I4: A four-cylinder engine.
* 3.0L V6: A six-cylinder engine.
* 4.0L V6: A more powerful six-cylinder engine.
There might have been slight variations within these engine families (e.g., different horsepower ratings), but these are the main engine choices for the 2000 model year. To know the exact engine in a *specific* 2000 Ford Ranger, you'd need to check the vehicle's identification number (VIN) or the documentation that came with the truck.
