The Lexus RX 330, produced from 2004 to 2006, has gained popularity for its luxury features and smooth ride. However, some owners and experts have identified certain years and common problems that potential buyers should be aware of. In particular, the 2004 model year has been associated with issues such as transmission problems and engine oil sludge buildup. These concerns could lead to costly repairs and impact the overall reliability of the vehicle. Additionally, owners of the 2005 and 2006 models have reported issues with the braking system and power steering, which could pose safety risks. It's crucial for prospective buyers to thoroughly inspect any used Lexus RX 330, consider its maintenance history, and possibly consult with a trusted mechanic before making a purchase decision.