2018 Western Michigan Broncos Opponent Penalty Split Stats through 01/07/2019
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 13 | 84 | 707 | 6.5 | 54.4 |
| at Home | 6 | 39 | 334 | 6.5 | 55.7 |
| on Road/Neutral Site | 7 | 45 | 373 | 6.4 | 53.3 |
| in Wins | 7 | 45 | 372 | 6.4 | 53.1 |
| in Losses | 6 | 39 | 335 | 6.5 | 55.8 |
| vs. Conference | 8 | 54 | 445 | 6.8 | 55.6 |
| vs. Non-Conference | 5 | 30 | 262 | 6.0 | 52.4 |
| vs. Ranked (AP) | 2 | 12 | 100 | 6.0 | 50.0 |
| vs. Unranked (AP) | 11 | 72 | 607 | 6.5 | 55.2 |
| vs. FBS (I-A) | 12 | 74 | 625 | 6.2 | 52.1 |
| vs. FCS (I-AA) | 1 | 10 | 82 | 10.0 | 82.0 |
| vs. FBS Winning | 7 | 42 | 362 | 6.0 | 51.7 |
| vs. FBS Non-Winning | 5 | 32 | 263 | 6.4 | 52.6 |
| vs. FBS Power 5 | 2 | 12 | 100 | 6.0 | 50.0 |
| vs. FBS non-Power 5 | 10 | 62 | 525 | 6.2 | 52.5 |
| in August/September | 5 | 32 | 252 | 6.4 | 50.4 |
| in October | 4 | 27 | 231 | 6.8 | 57.8 |
| in November | 3 | 19 | 169 | 6.3 | 56.3 |
| in December/January | 1 | 6 | 55 | 6.0 | 55.0 |