Lets look at something, for years the auto industry did pretty darn well without government intervention. Then we were suddenly saddled with emission controls, many of which worked very well. Air pumps were a horsepower draining stopgap, then came EGR systems and if anyone can explain how making an engine essentially eat it's own exhaust and run better It would be interesting. Then came the catalytic converters, which were spotty to say the least. GM, AMC and Chrysler used the AC (GM) bed type which looks like a large flat muffler filled with gravel. Ford and the European cars I used to work on (Mercedes-Benz, Jaguar and MG) used a monolithic style that has lots of tiny passages through what looks like ceramic. These flow much more freely then the bed type.
The result, in 1965 a Lincoln Continental with a 430 ci V8 and easily weighing well over 5500 lbs could get 16-18 mpg highway, a 1975 Chevy Nova with a 250 ci 6 cyl and probably weighing around 3000 lbs, was lucky to get 10 mpg due to the emission systems (lean mixture, EGR, air pump, and the bed type converter). Now they are pushing for almost unobtainable fuel economy and automakers are achieving most of it and still have decent performance. On rattles, my son had a 1999 Mustang convertible, while it was in the shop for a dealer caused electrical fire (car was originally a rental unit) V6 auto with GT brakes. He borrowed my 1985 LeBaron convertible and his first comment was how much tighter the body was than the Mustang.
Trucks, my 1986 F350 is very noise free with the windows up at speed, down is a different story, the passenger side front shoulder belt flaps like a flag in a hurricane. Truck is 35 years old, still has the original king pins and muffler. It is not gas mileage champ, the 460 loves gas, but I have yet to find something it won't pull and that's what the truck was built for.
I was raised on Chrysler products and had a number of minivans starting with a 1989 Grand Caravan with a 3.0L Mitsubishi oil leak special and an A604. That one sold both my wife and I on those, went to a 1993, 3.3L and A604, My new wife had a 1997 Grand Caravan 3.3L and A604, but it had a load miles so she sold it and kept the 93. We sold it when we bought a 2003 T & C 3.8L and 41TE, then traded it in on a 2005 T & C with Stow-n-Go seats, still 3.8L. The only vehicles I have ever had to put catalytic converters on were my 1987 Horizon (it internally disintegrated) and the 2005 T & C (it broke the flex joint). The 2005 also drove me crazy trying to get the correct, from Chrysler O2 sensors. Front one went bad, it took 3 tries to get the correct one that wouldn't set a code for heater voltage (one was a Denso, the other two Mopar) last Mopar was the right one.
It was things like that that sent me back to Ford on the family vehicles, I had a 1994 Taurus from April 2009 until last September, it had a bad crank journal when I bought it as a commuter car (5 miles each way). When we traded in the 2005 T & C on a 2011 Ford Flex after we drove one at the local dealer, that left us with no currently operational Chrysler vehicles (convertible is a project car), The Taurus was traded on a 2009 Flex with factory tow package. I had tried to get a hitch so I could haul my Aluma utility trailer with it, but only Chrysler had one that fit the Stow-n-Go models, $300 + and discontinued when I was looking.
Right now, due to several problems with past Chrysler products, I will not be buying one any time soon. Maybe if the quality returns, I might consider one.