The 2006 BMW X3 has a 3.0 L base engine size.
The 2006 BMW M5 has a 5.0 L base engine size.
The 2006 BMW M3 has a 3.2 L base engine size.
The 2006 BMW X5 has a 3.0 L base engine size.
The 2006 BMW M6 has a 5.0 L base engine size.
The 2006 BMW 3-Series has a 3.0 L base engine size.
The 2006 BMW 6-Series has a 4.8 L base engine size.
The 2006 BMW 7-Series has a 4.8 L base engine size.
The 2006 BMW 5-Series has a 3.0 L base engine size.
The 2006 BMW M6 has a V10 engine.
The 2006 BMW M5 has a V10 engine.
The 2006 BMW X3 has an inline 6 engine.