Manufacturing companies so often fail to correct known errors. Everyone knows BMW can't make a window regulator to save their lives. Causes a lot of people to steer clear of the great "driving machine". With all of their German engineering expertise, of course they could fix this if they wanted to. Easily. Probably in their sleep. They don't.
I've seen this again and again. For years, I owned Volvo 240s. Great cars. But they had certain known problems that were never resolved. Others, they'd take a half hearted stab at and in the process mess up something else. The Japanese manufacturers are different. Before WWII, William Edwards Deming brought his ideas about quality management and continually improving manufacturing to American corporations. Resulted in some great products, like those old indestructible Bell telephones. Anyone remember those? Couldn't break 'em no matter how hard you slammed the receiver in the cradle.
After the war, planned obsolescence gained ascendancy and the Americans wouldn't give him the time of day. So he took his show on the road and the Japanese adopted his model. The result is they created some of the best manufacturing enterprises the world has ever known. Their cars got better from year to year and generation to generation. They didn't have to have their butts kicked from one side of the world to the other in order to motivate the effort.
i've owned 13 BMWs and only had three window regulators fail (one E46 sedan and two on E53 X5 gen 1) and all these were on older models. my current BMWs haven't had a window regulator fail in over 13+ years so while the past may have shown issues, the current lineup doesn't have those issues (zero failures since 2008 MY, in my ownership experience).
maybe not making overly generic statement would be in order. and BMW has no issues selling lots of cars so i don't know how many people "steer clear" of buying due to window regulators. that just seems like a silly statement.
the reality is for Weber and the current Summit gasser cookbox is, it's too expensive to retool the build so they'll honor the warranty period which is 10 years on the cookbox. if you're a Sunday griller, that box will last longer than 10 years. if you're more a prosumer type griller, that box may or may not make it 10 years but if it fails within warranty, you're still covered so it's a no-brainer then.
i bought both of my two Summit gassers used because they were each at $0.36 on the dollar. that's a good deal for me. i destroyed the first one in 10 years and the cost of rebuilding it buying parts from Weber was more expensive than just buying a new-used one. so i went from a Summit 620 to a Summit 670. I'll likely sell the Summit 670 this summer as I don't use it or see a need for it any more. i'll get 100% or more of my money out of it so ownership was a zero loss or slight gain (i'll know for sure when I sell it).
even the older Weber Genesis boxes had problems. they'd warp under high heat. I went through two of those in my days as well. those were cast aluminum and they aged poorly. i also likely overcooked in them. i am not kind to my grills. i like heat and i like to cook for large parties.
nothing lasts forever. Weber still has some of the best warranty support in the market. Weber makes a very good mass market grill. if you want a pro-level grill, step up to all SS and get higher end burners and sear stations. the sky's the limit on price. Weber isn't making Porsches here. they're just grills. no need to bag on Weber or BMW.
there are plenty of other crappy grill options out there that'll last one to two seasons if you cook on them. then you can experience real garbage grills. until then, enjoy what you got and eat good food. and nothing lasts forever, nothing.
