"The engine management light is on all the time. My car went in for a service last month and they told me it was due to the Upstream O2 Sensor. At that time I needed the car and they said I could still drive it the way it is. However, I would now like to fix the problem as soon as possible."

The user didn't provide a description

"I was told that my VWjetta 2006 catalytic converter is clogged hence the low performance and loss of power. What/how can it be fixed and what is the cost?"