Sorry to hear about your issue and not being able to pay for service.

It has been my experience that dealerships are a rip off, however, I don't have experience with dealerships in Australia. The dealerships that I have experience with make much of their money on service. They will try to upsell every customer with things that they don't need even when it comes to oil services. For instance, there was a TV show that investigated dealerships recently. New cars these days have the oil maintenance interval pre-programmed to remind the drivers when to change the oil. It has been proven that oil maintenance interval set by the manufacturer is perfect for the vehicle and more frequent oil changes don't make any improvements. The result of the investigation was that the dealerships all say that the vehicles that they sell have oil change intervals that are wrong and will attempt to upsell their customers with oil changes that they don't need. (Keep in mind that the dealership is not the same company that manufactures the vehicle). My experience is that the dealership will cost much more than an independent mechanic. My advice is to get more quotes from other shops. By the way, your owners manual will list the specified oil for your vehicle. The bottle of oil you purchase will list the specifications on the back. You just verify that the specification found in the owner's manual is listed on the oil bottle. The auto parts store where you buy oil can determine which oils meet the specifications for your vehicle so you don't need to verify it yourself. They can also be a good source for mechanic or auto shop referral.

Finally, if you have a 2017 Hyundai, that car should be under warranty. Hyundai warranties are the best. You should make every possible effort to get the engine replaced under warranty. Check to see if there has been any recall notices on your specific motor or if there has been excessive engine failures on your model. Sometimes certain batches of motors had defective parts that weren't realized until after the vehicles were sold. If that is the case, your engine could be warrantied even after the warranty is over. The engine should last more than 2 years. Read your warranty to make sure you understand it. Talk to the dealership manager to get the car repaired under warranty. Make sure to thank him/her for their time and help and be especially polite. Be friendly and do not get angry or defensive. It will go a long way towards getting a favorable outcome. If you don't have success, try another dealership.