Any 5-year old vehicle with 252,000 miles on it is going to take a depreciation hit.
You may get $7,500 for a 5-year old Ford F-150 with 252,000 miles on it, but that same truck cost about $41,000 new. (I tried to price out the same trim level 5-years apart.) Given that amount of depreciation, I could buy almost 3 new Mirages.
Your car may not be worth much, but you also didn't pay much. If I had a car like your car, I would drop comprehensive/collision insurance coverage. You aren't going to get much anyways. Liability has you covered for the important stuff. You take out someone's $50,000 Lexus in an accident. Their vehicle is covered. You cut your losses on your old car and replace it. In the meantime, you enjoy operating a car for very little cost. Plus, you seem to be a safe/cautious driver. You have a true beater car!
All vehicles become less valuable as you rack up the miles. That's why I own a Mirage! I'd much rather rack up the miles on it verses my Subaru. I'd also much rather replace a Mirage over most anything else!
When I sold my 1990 Ford Festvia in 2004, I was paying $99 for 6-months of car insurance (liability only). Selling that car before it died was one of dumbest moments! I am not making that same mistake with my Mirage!