For engineering students, all have secondary admission to major based on college GPA and sometimes essays.
VT auto admits with 3.0 college GPA. Otherwise, admission to major is competitive.
Purdue auto admits with 3.2 college GPA. Otherwise, admission to major is competitive.
Texas A&M auto admits with 3.75 college GPA. Competition level otherwise is described at TAMU ETAM statistics - #172 by pbleigh
NCSU has no auto admit GPA, but has an estimator of chances at https://www.engr.ncsu.edu/academics/undergrad/coda-calculator/