 The timing chain broke at 90000 miles and before I could pull over the engine was ruined.  There was no signal on the dashboard that there was a problem but I could hear the valves pinging.  The dealer said the only option was a new engine and offered no compensation or explanation.  I changed the oil religiously with synthetic so there was no problem there. The Infiniti customer service was a joke.  They basically said the car was out of warranty and stuff happens.   My disappointment at buying a "luxury" car that didn't make it to 100000 miles can't be explained.  Then they sent me a survey to ask about my experience. I should have gone with the Hyundai, at least Korean companies stand by their products.