Lexus IS F 2012 Owner's Manual page 537

Designated seating
capacity, Number of
occupants
2 through 4
5 through 10
11 through 15
16 through 20
Vehicle normal load,
Number of occupants
2
3
5
7
6-1. Specifications
Occupant distribution in
a normally loaded vehicle
2 in front
2 in front, 1 in second seat
2 in front, 1 in second
seat, 1 in third seat, 1 in
fourth seat
2 in front, 2 in second
seat, 2 in third seat, 1 in
fourth seat
6
537