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.
I thought a review of a 6 year old SLK320 might be helpful to people. All of the '98 to '02 SLK's had an issue with paint peeling on the center console. Other than that my SLK looks like it rolled off the assembly line yesterday. I have never seen a car that has aged this well, bar none. Outside paint still lives up to its name 'Brilliant Silver'. Everything about the car is tight and solid. My last car was a Corvette so I am not new to performance cars and this one is a winner. No, it doesnt have the off the line grunt of a Corvette. It is more along the lines of european sports cars, in other words spectacular handling, very good road manners and comfort levels and exciting top end speed.