Originally Posted by SpiderDude
Has any installed lap belt in the middle of the backbench in a 2019 PW Sprinter Ascent?
Since it is nice to use it as a daily driver, our family consists of 5 member and there is only 2 seat belts at the rear. Other manufacturers have lapbelts in the middle of the back bench in a sprinter.
You'll be rolling the dice on safety, but only if the rear seat and existing mounts are somehow weaker that other rear Sprinter seats of that year, or the additional passenger weight leads you to exceed your units' GVWR.
To me, the main question would be "Did PW omit the rear center belts due to a safety issue regarding the capacity of the Ascent rear bench?", in which your plan is a no-go. Or "Did PW omit center belts to help ensure cargo and passenger weights did not exceed GVWR?", in which case you'd need to account for the additional weight when loading with passengers and cargo.