Comment Volume and design drives the cost (Score 1) 192
One of the biggest reasons automtive grade electronics in cars are so much more expensive than commerical grade electronics is the wider range of operating conditions. For instance, the autos need components than work just as reliably in Georgia summers as Montana winters.
Most consumer electronics will work just fine inside the vehicle cabin. (Engine bay and weather exposed areas is a different story) My company does automotive wiring and consumer electronics wiring and the differences in thermal and vibration and other performance specs are just not all that huge for the most part. Sometimes some increased temperature specs for engine bay stuff and being self-extinguishing can matter but that's not a big cost burden in most cases. I do the quoting and am both the engineer and accountant at our company so I know the numbers well.
No, most of the cost is simply design and volume related. Let me give you an example or two. We make a wire harness that has a grommet on it. We make two versions of it and the only difference is the size of the grommet. Why two versions? Because the engineers and Buick and the engineers and Chevy couldn't be bothered to talk to each other and standardize on a single grommet for both platforms. So we get a worse price because we have to buy two different grommets instead of a single one at a lower price. We also have some connectors on the harness. Instead of picking an off the shelf connector they decided to go with a custom connector despite it providing no performance benefit. So we have to buy 50,000 custom connectors with a 4 month lead time instead of using a standard connector carried by every distributor in North America for less money. Plus the volumes of production are a few hundred thousand. Sounds like a lot but compared to consumer electronics its almost nothing. Apple sells more iphones in a day than the number of harnesses we'll make this year. Volume drives discounts.