Kia Sportage Engine Problems

Take it back to the dealer and inform him that the leak hasn't been fixed and ask that it be done again. Whatever was done before clearly hasn't worked and you need to insist that they continue to attempt to fix it. Let it be known that you won't be satisfied until it is fixed. On your side is the fact that he car is only a few months old. There should be no argument about fixing it. If the dealer can't fix it, escalate you claim by taking it to KIA head office.

All Kia models after 2010 have timing chains, which don't need to be changed, but yours has a belt and it needs to be changed every 90,000 km or 72 months, whichever comes first. Not changing it is risking major internal damage to the engine if the belt should break. Replacing should cost around $400.

Generally petrol is better if your driving is short trips, diesels are much better when you drive longer distances and steady speeds are better than stop-start running.

Fuel companies have warranties that provide cover in situations where poor fuel causes problems, but before you can even think about approaching the fuel company you need to establish that your problems are a result of poor fuel. You need to be able to identify the outlet you bought the fuel from, produce a receipt of some sort that verifies the purchase and then some evidence that proves the fuel was the culprit. I would certainly get another opinion.