The MBUSA website offers a great comparison tool. You can compare Mercedes vs. Mercedes or Mercdes vs. something else in dimensions, features and even pictures. It has helped me numerous times when someone is looking an another make that I am unfamiliar with or the exact dimensions of two of our own models. It is kind of fun to stack them up side by side and see what surprises you. Note: every manufacturer measures differently and you should try on a car in person before deciding it will or won’t work for you.
Mercedes-Benz Compare Vehicles Link