I'm over a month late writing this review, but here's my tale: On 12/9/14 while picking up my boyfriend at the airport, my car got stuck in 1st gear. We live in north county, but our plans for the day had been to sneak off for lunch and then to a hotel for some RnR since he'd been out of town for weeks on end most of Oct & Nov. We pull into the nearest gas station from outside the airport and assess the situation. Search on google and find the nearest Mercedes mechanic is on the other side of downtown, but we can get there on surface streets. Miraculously, when turning the car back on at the gas station, it starts to shift again, but we still make a beeline for Dieter's. Right away the owner greets us, the lady who answered the phone is ready to check us in and the dedicated mercedes mechanic comes out to see what's up. $99 for a full diagnostic and about an hour. Meanwhile we are starving so we ask if there is anywhere we can walk for lunch while they look at the car. I think the disappointment showed on our face as they mentioned what was around so the owner says "Where were you going to for lunch?" Blue Water over on Columbia. "I'll give you a ride, drop you off and come back to get you." WHAT??? Now, how flipping amazing is THAT? Midway through our lunch, he calls to tell me it was just the battery going out that caused the electronic system to not properly shift the transmission. They can put a new one in before lunch is over! Wow! We arranged a pick up time, he was there as planned and took me back to my completely fixed car. On top of that, the mechanic ran all the diagnostic messages for me, reset a bunch that were just a result of the shorting out battery and wrote out what I needed to get fixed within the next 1000 miles. Yes, it was $400 for a new battery - BUT - it's Mercedes and just having the peace of mind to know exactly what was even coming up in the future was a huge relief! I wish I lived closer - they would get all my business on my '02 C320 wagon.