I have experience buying cars/trucks in the first year of "new & better".
I stopped doing that.
It can be hard to get it fixed because it's new and folks don't have experience trouble shooting it or fixing it.
It can be hard to get parts for as the parts really haven't been built up in inventory anywhere - because they are going on the new product to get it out the door to the customer.
If problems start to crop up the service people can be overwhelmed by the combination of the "usual" stuff they regularly deal with plus the "new" stuff they don't have experience with or parts for.
I bought a brand new Pontiac in 1976. First year for the "new" Borg Warner 5 speed manual transmission. Mine was built at the factory without a set of bearings on the input shaft. When it finally tore up (about 3,000 miles) Pontiac did fix it. Took them 6 weeks to get the parts and get it back to me (no loaner, not for 6 weeks, I drove one of dad's trucks). Then the night of the day I picked it up the clutch shredded itself. They blamed that on me, but still fixed it under warranty. Took them 2 weeks to do that. Had it 3 months and then had to do without for 2 months. Long wait times on parts/service on "brand new and improved" is probably a fact of life with many things.
Sorry for your problems.