The whole point of a free 1k inspection is for them to push additional product to you. Think about it, which business want to give away free time and labor. That is why they want you to keep coming back for the next 5 years.
At least Perodua did it that way.
During 1k inspection, they ask nicely if I want oil filter magnet.
For subsequent service, they just lump them in the service sheet and show me. Things like battery protector, sound insulation, injector cleaner, cabin cleaner, throttle cleaner and what not.
They will just promptly remove them if I just say don't want.
Imagine if 30% of the people just sign the form. Those are all high profit stuff.
For conti car, so far never have such issue with service center.
Never have a Honda, so no idea.
For warranty, you must read the fine prints on what is covered.
Perodua again, most of the things are covered for 3 years only.
Things that won't die like engine block are covered for 5 years.
For Conti car, they are the same, but if you use their insurance, they will cover everything for 5 years, minus consumable, wear and tear.
Again, read the fine prints.
DIY inspection is subjective. Most people don't even check water level. They do lift up your car and check undercarriage. To me it is personal preference.
Synthetic vs Mineral oil. I personally prefer less hassle and long service interval.
If you DIY the oil change I say go for it. Just Google how to reset the oil change indicator.
In my life of owning vehicle, all the things that dies are stuff that preventive maintenance won't help:
Water pump
Fan
Radiator
Bearing
Fuel pump
Power window
Rear defogger
Wiper mechanism
I have vehicle that I serviced myself, and I have vehicle that is wholly serviced by authorized center.
Makes no different in term of reliability. Of course this is just me. Your mileage may vary.
Car electronics in modern car
My experience is they don't die. When I get error codes, all of them are due to mechanical components. In the end it all comes down to diagnostic skills. Is authorized center better? Is outside workshop better?
Will they replace unbroken stuff?
Can you do it yourselves?
It is a free world. I say just exercise your rights.
Don't fall for FUD, don't let people gaslight you