Subaru Problems

The cargo cover will certainly help to restrain the luggage in the event of a crash, but it probably wouldn’t stop it altogether in a major altercation. A proper cargo barrier behind the rear seat would be more effective.

If you've got dash cam footage that conclusively shows the breakage wasn't caused by some external impact I would say, yes, pursue it. But if there weren't conclusive proof that it wasn't caused by an object impacting the glass I wouldn't go any further.

It’s possibly worn out and in need of replacing.

All engines use oil, some use more than others, and you are expected to top them up if the level drops to the low mark. There is no rule that says a car will get from one service to the next without adding some oil, and with the extended service intervals in play today it's more likely that you will have to add oil at some point before reaching the next service. Subaru tells you it's ok, I would accept their advice.

Without knowing what you mean by casual weekend drives, I will assume they’re not off-road, so either one would be a good choice.

Switching the transmission and ECU clearly hasn’t fixed the problem, so look at sensors in the system, the wiring harness, and connections. I would suggest you take it to a Subaru dealer or an auto transmission and have them check it for you.

I wouldn’t buy them without doing some homework to make sure they would suit your car. Find a Subaru specialist mechanic, one who can advise on performance options, and check with them.

It won’t fit without a lot of engineering. If you seriously want to do it you will need to talk to a qualified engineer recognised by Vicroads, and have a large amount of money at your disposal.