Hyundai I30 2011 Problems

Carmakers are stretching oil change intervals all the time, mostly to reduce the cost of servicing of their cars, and the quality today’s oils allow them to do it. But I too would prefer to change oils more frequently, and in particular change the oil at the first service. That way you clean out any rubbish or grit that is left in the engine from the production process. It’s good insurance.

There’s no such thing as a problem that can’t be fixed. If you have on record that Hyundai doesn’t know what is causing the problem and can’t fix it I would think you have good grounds for asking for your money back.