The shifter on your vehicle is an important part that you need to be taking care out. Whether your Mercedes-Benz is an automatic or manual transmission, you use the shifter every time you're behind the wheel to get into different gears. It's important to pay attention to how your shifter is feeling and ensure that it's easy to use. Another thing to pay attention to is the condition of the shift knob itself. The shift knob is what you hold onto with your hand when you're changing gears. Over time, the shift knob has the potential to wear out. Frequency of use can cause the surface of the shift knob to weather or fade. Exposure to the sun can also cause this. You also could be wanting to replace the shift knob to change the look of your car's interior. There are a ton of different types of shift knobs you can look at that can personalize your interior.