For people wondering about the safety in the newer Mercedes sprinter vans. I can confirm. AWD does work...even with 3 wheels. : r/VanLife
Amazon.com: APS Running Boards 6in Matte Black Compatible with Dodge Sprinter 2007-2009 Full Size Van & Mercedes-Benz Sprinter 10-24 3-Door(Exclude Passenger Van with Rear A/C and 2015 4X4) Nerf Bars Steps :