High cost of Car maintenance

[BUSGO]

I'll flash up the costs when they stop rolling in.
It would be good to get a second opinion from an unbiased Holden mechanic on this.

In any case the car is still under warranty from the dealer where we bought it and get it serviced regularly but they are not Holden dealers and can't determine a fault code.
Hence, I took it back to the Holden dealers to get it sorted.

I knew that this car would be expensive for parts when they were needed but when fully maintained by the book, these faults should not happen if the services are done properly.