Oil changes are recommended after a year, so that’s what I’d do in your place

But you don’t need remote start. You were not forced to do anything, you were given the option of paying the subscription and chose to pay. Had you said, “I hate how MB and other force you to buy in to the subscription if you plan to have remote start.” That’s not a necessary feature and you could have lived without, but you didn’t want to. When you paid MB for the “service” you essentially told them “I dislike this but I don’t hate this principle enough to not engage in it.” That’s why people are saying that you are a part of the problem. You did what MB wanted you to do whem presented with that option.

I agree with the other commenter on a bad battery. It’s revealed itself now that the colder weather is kinda staying. Running your car after jumping the battery is a good thing to, that let’s the alternator charge it back up. That’s why it had no issue starting up after you drove it down the highway for 45 minutes. Should be a relatively cheap and easy fix!

5,000 is standard for most cars vehicles produced in the last 20 years, 3k is what I do on my 92 pickup and 96 Civic.

I will always have a 90’s Civic. I’ll probably end up with multiple, but there will always be at least one.