If the 111W151 does not have alternating presser feet (walking foot) and is only needle feed, it will be very limited when it comes to auto upholstery. It would be better suited to sewing flat canvas, sails, or tarps. It would struggle to sew thicker things like sew foam. Compound feed means it has two ways to push and pull the work through the machine with feed dogs and needle feed as opposed to needle feed only. Home machines are generally needle feed only.
No one lives forever, the trick is creating something that will.