Find a Car
19 city and 26 highway= GAS HOG for a Sentra.
If I wanted to putt around at average speeds of less than 40 MPH per tank then my mileage would equal yours, in a significantly heavier car, with one of those automatic transmissions you like to trash. The Altima averages close to 38 MPG at 65 MPH on the Interstate.
regards
Mech