737 MAX Incorrect Performance

Despite the 737 MAX having more fuel efficient engines which increase the range on the aircraft, all of the MAX aircraft have less range when compared to their Next Generation counterparts.

e.g.

737-700 - 3,452 nm

737 MAX 7 - 3,280

737-800 - 3,194 nm

737 MAX 8 - 3,125 nm

737-900ER - 3,716 nm

737 MAX 9 - 3,516

Taken from the respective Aircraft Information pages.

Additionally, the MAX variations have a longer turn time. Not sure why this is, except for the MAX 7 with it’s increased capacity.