I had a very poor experience with Kennesaw Auto Center. Our 2012 Subaru Forester check engine light came on. I scanned the code myself and it indicated a misfire on cylinder 2. I came here for diagnostics on why the misfire was happening. A few hours after dropping the vehicle off the mechanic called me clearly frustrated and said "I can't figure this out". He said there was coolant fouling on the spark plug which could indicate a head gasket issue. He performed a block test which passed but when he tried to do a pressure test the radiator started leaking and he was unable to do anything further unless he replaced the radiator. I was quoted $2100 dollars for the raditator replacement and told that if it was a head gasket issue it could be an additional $7,000-$10,000. The radiator was not leaking prior to bringing it in although I do understand that doing a pressure test could have turned a pinhole or minor leak into a major one. Ultimately, I don't feel like they diagnosed our vehicle properly. The coolant fouling could have caused the misfire but it could have also been a bad spark plug, ignition coil, etc. I've replaced both those items and the misfire hasn't returned although it may if the head gasket is blown. In my opinion a good mechanic would have offered and started with a cheaper repair and escalated it as needed rather than defaulting to the most expensive repair possible with no other options. Additionally, $2100 for a radiator replacement is outrageous. A replacement radiator cost $200 and I was able to swap it out myself as a complete beginner in just 3 hours. I'm sure an experienced mechanic could do it much faster. I also received a quote from the dealership for the head gasket job ranging from $4,000-$6,000. Their quote was nearly double the dealerships. My assumption is they overcharging for labor or giving a price they knew was too high because they didn't want to deal with the job. I would not recommend Kennesaw Auto Center based on my experience.