Owners' Stories

I lease a 2010 Lincoln MKS. My lease is done in Feb.2012. I was planning on buying it but now I wonder if I should. The engine light comes on almost every time after I re-fuel. I took it to the dealership where I bought it. They tell me it needs a new catalytic converter. Otherwise, I love the car but should I buy it now? It only has 19,000 miles on it.