And GM can't make a reliable pushrod.
GM 3800 Pushrod V6 has been voted one of the 10 best engines in the last 100 years. Stock blocks are running 9s in the quarter. Without modification these engines have ran well over 200,000 miles with standard maintainence. Cruize set on 70 getting an average of 28 MPG is not unheard of. The engine has been around and only slightly modified since the 1960s. In addition the engine will not die. Due to my own mistake I chipped a piston in my Grand Prix (3800 S/Ced). I changed the plug and the car motored on. I chipped it again after a different modification caused a major tunning issue and this time the debris hung a valve open in the head. Car still drove 30 miles and got me where I needed to go. So far I have only been left on the side of the road once (broken axle which probably had come out of a damaged car and was cracked when I got it) which is far less than I can say about some of the import cars I've owned.
Yes, MX-5 sales are up...after a year of production issues that resulted in a very low production model year.
Yes, GM is hurting as is every major domestic auto manufacturer becasue they have hung their hat on the SUV bandwagon and now that gas prices have gone through the roof SUV sales have plummeted. GM is attempting to rebirth itself and the Kappa line is just a beginning. Whether or not it works remains to be seen.
Reality is that each manufacturer is having it's own issues and own high points. You point to Mazda yet they've been in cahoots with Ford for a very long time. Both companies bring something to the table to make both product lines better.
Domestic vs import is so outdated these days it's not even funny. Welcome to the global ecconomy.
And this is nothing against imports...I've owned a pair of Honda's and my mother owns a LS400 which is very nice...but I bring this up to point out that Domestics have gotten a bad rap because of their former disposableness. This is certainly not true today.