- The 2003 Mazda Protegé LX with a 2.0L engine was rated for 24 MPG in the city and 34 MPG on the highway.
- The 2003 Mazda Protegé ES with a 2.0L engine was rated for 25 MPG in the city and 35 MPG on the highway.
- The 2003 Mazda Protegé5 with a 2.0L engine was rated for 23 MPG in the city and 30 MPG on the highway.
- The 2003 Mazda Protege5 with a 2.3L engine was rated for 20 MPG city/27 highway.
Protegés equipped with the 4-cylinder 2.0L (2.2L for 2000) get between 25 and 34 miles to the gallon (mpg). Protegés equipped with the 2.3L V6 engine receive less miles to the gallon, receiving between 22 and 23 (mpg) city and 27 to 29 (mpg) highway.
