Warranty
If a used car purchased by myself has issues that the dealer has not repaired within the statutory warranty period, can I ask for my money back and return the car?

I have a 2018 ZB Holden Calais V, and the rear end has developed a grinding and banging sound under certain driving conditions. I reported this to my local dealer at its 132,000km service. The dealer submitted a warranty claim to Holden for a diff flush but the claim was denied by the extended warranty provider. I have contacted Holden Customer Care twice - which appears to be an overseas call centre – and after a 50-minute phone call and being put on hold three times the consultant came up with the same conclusion - warranty claim denied. I hung up in disgust. Failures in the rear differentials seems to be happening frequently in these cars. I bought mine brand-new with a seven-year unlimited kilometre new-car warranty and my car has only been serviced by Holden/GMSV dealers. Holden has abandoned Australia and customers like me and now I’m stuck. Surely Holden still has some responsibility with their customers. Can you please help me?
Got new motor from Mazda 12 months ago and now need a new turbo. Would this be covered under warranty? I was quoted over $9000 to fix.
I have a 2015 Ford Kuga, purchased from a Ford Dealership in 2017 with 3000km on the odometer. I purchased the extended warranty which expires in March 2024. A condition of the extended warranty is that I had to service the car every six months instead of 12 months which I did. Two weeks ago the fourth cylinder lost combustion pressure and they say the engine needs to be replaced, but that the warranty only covers $3000 of the $7500 cost. Is this right? I was told my extended warranty mirrored Ford's new car warranty when I bought it. The engine they sourced is a reconditioned engine with 140,000km whereas mine has only about 85,000km. I feel like they should replace like for like and at no cost to me. Thoughts?

I bought our Hyundai iX35 brand new from a Hyundai dealership in 2015. We have had it serviced by them regularly. It has done 104,000km.
I took the car to the dealership because the engine had started to become noisy. I was told the oil was low and to monitor it. I noticed it was going through an inordinate amount of oil. It has no leaks and is not blowing smoke.
I took it back to the dealership and have been told the engine has "internal fuel usage, excessive ring clearance causing oil to burn, and will require engine bottom end replacement to rectify".
Should this be expected of a car only six-and-a-half years old?
My 2018 Ford Focus Trend Hatch has done 62,000km and has lost compression in the fourth cylinder which I understand means engine replacement. The car has been fully serviced by Ford since its purchase. It is clearly out of warranty, however I want an opinion as to whether I could still be covered by consumer law given the low kilometres and history of service. Ford also wants to charge me $3500 just to determine what is wrong - I am awaiting a hearing at VCAT.

