I think quality wise we got to a pretty good standard in the last 10 yrs. Reliability wise, we were up with the Europeans.
The yanks have been building cars for over a 100 yrs and still can't get their stuff reliable !!
The good.
Engine wise, pretty good.
Fuel consumption, very good.
Brakes.... pretty damn good... but see below.
The bad,
Fit and fitment of dashboards and door trims. (cheap arse plastic)
Centre consoles and lids, (cheap arse plastic that breaks.)
Bumper bar brackets and retaining clips. (cheap arse plastic)
Steering wheels than fall apart in the sun.
Steering wheel operated buttons, fall off and on the floor, never to seen ever again.
Internal plastic door handles that break. XD to XF falcons were breaking outside handles in the 80's.
Hood linings, been falling down since the late 80's.
Head lights that fade and dis-colour in the sun.
Paint jobs, the clear coat peels off.
Metallic paint jobs, massive fade issues..... esp the orange based colours.
Brake rotors that require replacement because they've warped in 30,000klm.
Rubber donut tailshafts, because otherwise, they would vibrate ya fillings out.
Cars that catch fire.
Service costs.
Computers, more so the earlier stuff of the 90's
Power window mechanisms, motors are good, plastic clips break and you have to throw away a complete unit.
That list, just took me all of a couple of minutes to write. Sad really.