I hardly think a little broken plastic piece is something starting a rant about selling a car over.
I have yet to break anything on the interior on my car...or even develop a rattle/squeak from any interior bits. My car will be 2 years old in April, 2 1/2 since it was built.
The only other car I've owned with that kinda interior build quality were (two) Hondas...which is very high praise for a Chevrolet...lets face it, their interiors have been severely lacking decent build quality for years. On the other hand, they do have a history of building several very good motors that will stand the years quite well (see 350 V8, 3800 V6, 2.2 Ecotec).
In my experience, "luxury" vehicles tend to wear very poorly after a few years...I've seen more older BMWs, Audis and Volvos that crash, bang, and rattle over bumps than the 18-year-old Honda I owned. I've also seen the interior quality of Japanese vehicles decline significantly in recent years as they try to become more competitive on a price standpoint and have started building and sourcing car parts within the US.
GM's parts suppliers - things that are outsourced to other manufacturers - seem to be their major downfall when this car was brought to the US market, especially for the 1.4 engine. Things like thermostats, water pumps, coolant expansion tanks, struts...the things that really shouldn't matter...and don't seem to be a problem in overseas versions of the Cruze, except that the manufacturers built hundreds of thousands of them, and did it as cheaply as possible so that GM could turn a big profit on the sales of what has been one of their most successful cars to date. I should hope by the 2014 model year, they have made huge strides to crack down on the quality of these things...and it seems that they have had great success with the reliability and parts quality of the new-to-US-market Cruze Diesel.