2022 Spark LS
Had my new Spark almost 2 months & now has 1,942 miles. First gas tank I got slightly over 26 mpg. Was a little disappointed. But it went up every tank & last night was 31 mpg. I think this engine just needs miles to break in. I'll see if it continues to improve & when it levels off I'll do my first oil change. Full synthetic, probably Amsoil 0W-20.