I owned a Mazda Miata prior to this Mercedes and worried about the reliability of this vehicle. However, the car has been great and I now have almost 50,000 miles on it and it is a pleasure to drive and fun when top is down on a nice day. I love the fact that the roof is solid and that I don't have to worry about the snow causing any damage to the interior. The car is also great in snow with the snow tires that I purchased only a few months after I fist got the car. All in all, I would say that I love this car and that it has served me quite well.
This is my third MB and the nicest looking by far. I bought it basically for the ease of the retractable hardtop. The trunk is small, but adequate for trips to the grocery store. I would rather have a single disc CD player than the optional 6 disc in the trunk. Pickup is not as responsive as the 230SLK supercharged which I previously owned. I like the interior features better on the 320 though, with the wood grain treatments. Definitely not a family car, just a fun short trip vehicle. Gets about 18 miles per gallon with city driving and 29 miles per gallon exclusively highway. Great car for me, but I only do about 5K a year.
This car is one of the best looking cars on the road. Performance is good for the V6 models but mine is a 4 cylinder and the performance is only OK. Interior is very nice but the weak points is the electronics that fail frequently. Gas mileage is poor for a small car with a 4 cylinder engine. Recommend the car for sunny day short drives but take the big car on trips.