The Mercedes-Benz brand has produced a ton of different Classes in it's day. This includes the GLS-class which features a range of full-size SUVs. They have been in produced since 2006. These cars feature three rows and accommodate seven passengers. They are considered to be the flagship vehicles when it comes to the SUVs that the brand has produced, and share the same unibody construction as the GLE-class. First generations were produced from 2006-2012. The cars were originally considered the GL-class, but the "S" added represented the SUV status. The GLS 550 is one of the cars produced in the Class. If you need parts and accessories for your GLS 550, be sure to get OEM ones that are made specifically for it. This ensures that you'll get the best fit and components that last a long time.