While it is still up there with the best, Mercedes-Benz is already developing a mid-cycle facelift for the S-Class, as the video that shows three mules testing near Mercedes-Benz’s headquarters reveals.

These particular testers are completely free of camouflage and therefore provide us with an unimpeded view at the updated design.

In 2013, the W222-generation S-Class was launched which pushed the boundaries of what we knew was possible for high-end luxury sedans.

While the S-Class doesn’t carry a price tag to rival those of the Bentley Mulsanne and Rolls-Royce Phantom, it is easily loaded with more advanced technologies than those two and unsurprisingly, has proved exceptionally popular with over 100,000 sales in the first 12 months the latest S-Class was on the market.

As we’ve come to expect from Mercedes-Benz, the styling changes are so minimal that they’re almost indiscernible from the existing model. The only slight changes we can see are the inner designs of the headlights and taillights. Apart from some minor details that will be noticed on closer inspection, everything is as sleek and sophisticated as the outgoing model.

At this stage, it remains unclear when Mercedes-Benz plans on introducing the facelifted S-Class, although late next year seems like a good bet.

VIDEO