That sounds about right -- my rule of thumb is that $200/mo TCO is about as low as you can reasonably go "in general".
My last two vehicles were
1. 2005 Chrysler Pacifica. Paid $16,500 in '07. Sold in '17 for $1,900. A few sets of tires, insurance premiums, and (gently) hitting a couple of deer put it around $225/mo over those 11 years.
2. 2009 Pontiac Vibe. Paid $14,500 in '11. Still have it and it's only needed minor repairs (knock on wood). Sitting around $250/mo TCO, but it's still worth a few thousand.
My last two vehicles were
1. 2005 Chrysler Pacifica. Paid $16,500 in '07. Sold in '17 for $1,900. A few sets of tires, insurance premiums, and (gently) hitting a couple of deer put it around $225/mo over those 11 years.
2. 2009 Pontiac Vibe. Paid $14,500 in '11. Still have it and it's only needed minor repairs (knock on wood). Sitting around $250/mo TCO, but it's still worth a few thousand.
YMMV.