Gasoline Engines:
* 525i: 2.5L Inline-6 (192 hp)
* 530i: 3.0L Inline-6 (230 hp)
* 545i: 4.4L V8 (325 hp)
* 550i: 4.8L V8 (360 hp)
Diesel Engine:
* 530d: 3.0L Inline-6 (231 hp)
To determine the specific engine size of your 2006 BMW 5-Series, you can:
* Check your vehicle's VIN (Vehicle Identification Number). This can be found on your registration or the driver's side dashboard. You can use this number to look up the engine size on a website like AutoCheck or Carfax.
* Look in your vehicle's owner's manual. The manual should list the engine size and other technical specifications.
* Check the engine compartment. The engine size should be stamped on a metal plate on the engine block.
Please note that there may be other, less common engine options available for the 2006 BMW 5-Series.