I brought my 2005 c230 kompressor coupe to the Mercedes Benz dealership for what they called a "Campaign" - basically a recall due to a malfunction where one of the parts allowed oil to leak into the wires and into the computer. The "Campaign" replaced the computer and they cleaned the electrical wires/connectors, etc. Yet after the "campaign work was done, the car kept running like a tractor and the engine light kept coming on. I returned to the Mercedes dealer a few times - they said it's time to get a new car... THEN I went to Central Import, they looked at it, noted that the electrical wires (all from the dealership "Campaign" were not attached properly - they simply attached them properly and the car runs as if it is brand new. I find them to be the most honest of all service people I have worked with, the pricing in line with the quality of work and in fact am very pleased to have been referred to them from a friend!