[mastax]

Every production car is built down to a price, even expensive luxury cars with large margins. All car segments are extremely competitive and any efficiency you can gain over your competitors can be put into more features, higher quality, lower price, or more profit. Over-engineering isn't that much of a marketing point or Saab would still be around.

That said, mass produced electronics are cheap - even automotive grade ones. It wouldn't add that much to the BOM, it would be mostly design cost. I just can't see the justification without it being required by regulation.