Here is a manual 1997 Civic with 188,000 miles. Unfortunately, it has some aftermarket parts:
https://phoenix.craigslist.org/evl/cto/6188966915.html
I am asking the seller which model, but it is probably rated around 27/34.
Here is an Accord like mine, while I got 37 MPG on my last tank, that was all highway, and this is rated 20/27 or 20/28. Mine is a beautiful car, though:
https://phoenix.craigslist.org/cph/cto/6189252115.html