Daimler and Renault-Nissan have confirmed that the upcoming Mercedes-Benz pickup will be based on the Nissan Navara. The car will be built by Nissan at the Barcelona and Cordoba plants and will underpin some of the elements seen on the Navara. 
However, Mercedes-Benz has told us that the car will be designed to meet the specific needs of Mercedes’ customers with distinctive characteristics and features. For now we don’t have much info about the upcoming pickup but the German confirmed we will see a double cab configuration. 
"Entering the rapidly growing segment of midsize pickups is an important step in continuing our global growth path. Thanks to our well-established partnership with the Renault-Nissan Alliance, we are able to drastically reduce the time and cost to enter this key segment", said Daimler Chairman Dr. Dieter Zetsche. 
"Thanks to our cooperation with Daimler on this project, we will be able to share the cost of investment at the Cordoba plant, while at the same time open up new markets in the Latin American region for the Renault-Nissan Alliance", added Renault-Nissan Chairman Carlos Ghosn.

Source: Mercedes-Benz