* 2.5L Inline-4: This is a smaller engine.
* 3.0L Inline-6: This is a larger and more powerful engine.
* 4.0L Cologne V6: A larger V6 option, typically more powerful still.
To know the exact engine size of a *specific* 1999 Ford Ranger XLT, you'll need to check one of the following:
* The vehicle's title or registration: This will often list the engine displacement.
* The sticker on the driver's side doorjamb: This sticker contains information about the vehicle's specifications, including the engine.
* The engine bay: The engine itself will have a label indicating its size and type.
Without knowing which engine is in *that particular truck*, it's impossible to give a definitive answer.