The Mazda 626 did not see any changes for the 1991 model year.

The 1991 Mazda 626 came in a number of trims, including the base DX sedan, the midrange LX sedan and hatchback, the high-end LE, and the sporty GT touring hatchback. The DX and LX models shared a 2.2-liter, 110 horsepower four-cylinder engine. The GT had a 2.2-liter 145 horsepower four-cylinder. Fuel economy was 24/31 for the smaller engines and 21/28 for the GT.

Most 1991 626 owners like their cars because they are inexpensive to own and operate, easy to repair, and extremely reliable. Some owners complain that the DX and LX models don't have enough power and that the interior feels a little cheap. Customization enthusiasts like this model because they are very easy to modify and many aftermarket parts are available.