How to repair and maintain if there's no 4S shop locally?

How do you maintain and repair a car that has been discontinued for so many years?

Is maintaining and repairing this car troublesome?

Should the car be serviced and maintained at a Subaru 4S dealership?

Are there no more 4S shops now, so should I go directly to a repair shop for maintenance?

Do you guys prefer going directly to the 4S dealership for repairs, or do you tend to buy parts yourself and find a repair shop?

There's no local 4S shop, and the nearest one is over 200 kilometers away. I want to ask, if I encounter a traffic accident and want to go to the 4S shop for repairs, is it not possible? Thanks.

Haval H2's snow mode malfunctioned. Should I go to the 4S shop for repair?

I just received the news that the local 4S shop has closed. I want to ask, for car owners without a local 4S shop, how do you handle regular maintenance? Do you have to go to another city for the 15 maintenance services over the 5 years for a new car?

Does anyone know how to maintain the transmission for the Pentium 8AT version? I've been asking the 4S shop for a long time, and they keep saying it's out of stock. Can I get it serviced at an external transmission repair shop? Just using gravity oil change, can other maintenance kits be sourced at external repair shops?

If I don't go to the 4S shop for maintenance during the warranty period, will it void the warranty? How much does it cost for maintenance at the 4S shop?