I know something about mechanical engineering and doing away with needlessly tight tolerances is one of the most efficient ways to cut costs. If the cars are d

I know something about mechanical engineering and doing away with needlessly tight tolerances is one of the most efficient ways to cut costs. If the cars are designed so that there is some genuine need or benefit from general extra tight tolerancing, then the issue is way way worse than merely tolerancing out of ignorance. In that case the design work is going to result in high workload in assembly in addition of high workload in fabrication. I sincerely hope it was just a cheap marketing stunt aimed at consumers.