Cadillac Motor Car Division Do NOT buy a Cadillac ! INFERIOR QUALITY - INFERIOR CUSTOMER SERVICE Nationwide

You're either a total moron or you work for GM !! A car is not meant to last more than 7 years??? Are you kidding me? This car had 58K miles on it, and the engine blew. And you're saying that this is normal? What world do you live in where it's acceptable for an engine, regardless of brand, is totaled in 58K miles? I wouldn't expect this in a Yugo, let alone a GM product. Have fun buying a new car every 7 years, regardless of mileage. The car dealers must love you..... 

I'm not sure why you think a 10 year old "luxury" car (it's a GM, so that's a relative term) is worth anything at all.  The more expensive the car, the less it is worth when it's 10 years old, at least for mass-produced models.  $50k cars are designed to reliably last 7 years. And this applies to everything -- GM, BMW, Mercedes, etc.  Anything more than that, and you are on borrowed time.  The cost of parts does not justify doing anything but the most minor of repairs.  And low-mileage cars aren't a better deal than high-mileage ones.  An engine with 120k on it is more likely to get to 250k than an engine with 50k on it.  

And no, the quality of a Cadillac is not any better than the quality of a Chevy Cavalier.  They are made in the same plants and designed by the same people.  The main difference is the number of bells and whistles, and they don't add reliability; rather the opposite.