21 mpg. Quiet! So quiet. 90 mph drives like 60 mph. Huge trunk. Perfect comfort. The front seats adjust in innumerable variations. Around town and trips, comfort. I can not remember ANY big work until 2005. (Earlier, we had to replace the front light..a stone. In 2005 we put in a new transmission.) All the car needs is oil changed, fluids, and new tires. Now it is 15 years old and still excellent. I think cars have personalities in a positive or negative vein based on their year. 1991 was a great year for the Sovereign.