I am in the automotive industry and this question comes up frequently.
In my field of specialty we have a certain pricey component manufactured by Robert Bosch Corp that is know to fail regularly. When replacing said part we ALWAYS use the reman one. We have found that the reman one does in fact last twice as long and has a failure rate that is much less than the new part. To say that manufacturers tend to spend better quality control on the reman part is a genuinely true statement. In our case we have actually been told by the vehicle manufacturer that the reman part purchased directly from Bosch goes through 3 testing phases vs. the new part that is assembled ,tested once and shipped.
Companies tend to roll the dice sometimes with components and assemblies to speed up the process of a part that may be in high demand. Therefore they will "skimp" on quality control in lieu of getting a product to market.
In my field of specialty we have a certain pricey component manufactured by Robert Bosch Corp that is know to fail regularly. When replacing said part we ALWAYS use the reman one. We have found that the reman one does in fact last twice as long and has a failure rate that is much less than the new part. To say that manufacturers tend to spend better quality control on the reman part is a genuinely true statement. In our case we have actually been told by the vehicle manufacturer that the reman part purchased directly from Bosch goes through 3 testing phases vs. the new part that is assembled ,tested once and shipped.
Companies tend to roll the dice sometimes with components and assemblies to speed up the process of a part that may be in high demand. Therefore they will "skimp" on quality control in lieu of getting a product to market.