Mercedes-Benz dealerships are big because there are so many different Mercedes models. There are the small C-Class, midsize E-Class and big S-Class sedans, and small CLKs and big CL-Class coupes, and a CLS sedan that splits the difference. The C-Class and E-Class come as station wagons, but there's also the R-Class "Sports Tourer." In turn, the R-Class is related to the M-Class SUV and there's the hardcore G-Glass SUV above it. The SLK and SL roadsters are sporty and the exotic SLR McLaren is studly. Go to Edmunds.com to find Mercedes-Benz dealerships in your area and make sense of this staggering variety.