I purchased my GL450 from a private party and less than 3 weeks later my check engine light came on. I expected to put some money into the car as it is used and had came from a private party. However the vehicle has very low mileage on it, for the year of the vehicle. (It was garaged for most of the time). Anyway, check engine light came on, I planned on taking it in to someone to have it checked out anyway, just to make sure everything is in working condition. So it was a perfect time to check the check engine light issue. I knew it had something to do with the gas cap because the “empty gas tank” indicator would blink every now and again, even though there was gas in the tank (more than half). I’d also already changed the gas cap before taking it in... Called the dealership, told them what was going on - they gave me an entire speech about smoking the exhaust lines and the engine to see what’s going on - was going to cost me $399. Fine. Do what you need to do. Also, my 3rd row seat isn’t locking when I put it in the down position. - $195 (that they didn’t tell me until they had already pulled the seat apart - couldn’t find the issue - supposedly fixed the seat but 5 days later the issue came back) They called me for the 3rd time (After 2 days) to tell me that some computer portion of my car that reads whether there are fumes being released into the air, isn’t functioning and it would cost me $3k for them to fix it. (Uh - no thank you) Mind you, this was the THIRD phone call. The THIRD time my price point went up and the last time they called me, they’d already proceeded with “fixing” the issue, so I couldn’t even refuse the $195 service to “fix” a chair that wasn’t even really a big deal to begin with. I refused the $3k service and picked up my car. (Mind you the vehicle is driving PERFECTLY fine - just the engine light claiming something is wrong) The service rep at Benz told me, verbatim, “that’s what you get when you buy from a private party” - and he was very condescending about it. I was offended and felt a sense of me not being worthy to bring my used Benz to the dealership for repairs. I continue to drive the GL for a couple days and now I hear air leaking when I go over bumps while I drive. I notice a “malfunction” display on my dash with the 4matic symbol - basically telling me something’s wrong with my air suspension. Obviously, that’s where the air is being released from. I would rather sell my GL than take it back to the dealership to be treated so poorly. I stumble across “CK Auto Exclusive” while driving on Petaluma Hill one day, looked them up, read their reviews, called in, spoke to Paul and told him my story. Not only was he understanding and empathetic to my poor service at the dealership but he talked me through everything they were going to do to my car and honestly - I would have HAPPILY given Paul $3k to do whatever needed to be done. Money wasn’t the issue at the dealership, it was their poor service, their continuous price jacking and the way they kept changing the issue every time they called me. To say I had the most easiest, friendliest and trustworthy experience at a car repair shop - is an understatement. I only spoke to Paul 3X but I’d take my car back to him in a heartbeat and I’d recommend anyone to him. All in all, Paul repaired everything that needed attention for LESS THAN HALF what the dealership was claiming and he did it in less than 8 hours. Thank you Paul, John and the rest of the crew at CK. Ya’ll are amazing and I truly appreciate your service. Thank you.