Well, were do I begin! I purchased my Lexus pre-owned from a local dealership. I had only driven my car for 2 days and my check engine light and oil light kept coming on. So I take it to the dealership and my key immobilizer system had blown. My valet key was the only thing that would start it...... Then, not even a week later I had blue/white smoke coming out the back end of it every time I would start it!!!! Once again, I head to the dealership...... I get a call saying how they had to rebuild my engine because the oil was sludged up!!!!!!!!!!!!!!!! The vehicle only had 25K on it and I was shocked! So, within the first week of owning it, I had to get practically a brand new engine!