my car is a 124, 230E, M102 which basically has the same engine as xp190. I just had my fuel pump replaced last Saturday. As a matter of experience, failing electric fuel pumps does not really stall the vehicle. It becomes loud over time and your car will suddenly develop a hiccup one day. The vehicle will sort of jerk while accelerating at any given gear change jsut like what happened to me.

My mechanic checked electricity, cleansed the plugs and changed fuel filter with no positive effect. Changed the fuel pump whose sound changed from a loud buzzzz to a whine and everything is fine now even better I suppose since it has become more responsive.

just my 2 cents.