I have no idea what the official rating is, but my 1998 Buick Lesabre gets about 31 highway on a consistent basis, and it's not even vaguely designed for effici

I have no idea what the official rating is, but my 1998 Buick Lesabre gets about 31 highway on a consistent basis, and it's not even vaguely designed for efficiency. Of course, city, which is where I live, is closer to 19 or 20.