Gas Engines:
* 3.6L VR6: This naturally aspirated 3.6-liter V6 produced 275 horsepower and 265 lb-ft of torque. It was the base engine option.
* 4.2L V8: This larger 4.2-liter V8, also naturally aspirated, produced 350 horsepower and 325 lb-ft of torque. It was available in higher trims and offered a sportier experience.
Diesel Engine:
* 5.0L V10 TDI: This was a powerful turbocharged diesel engine, putting out 350 horsepower and 553 lb-ft of torque. It was the most powerful engine option and offered exceptional fuel economy.
To know the exact engine size of a specific 2007 Touareg, you'd need to look at the vehicle's Vehicle Identification Number (VIN). This will provide detailed information about the vehicle's configuration, including the engine.