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ArmyService SupportRank #66 of 101 by 4-year cost
91B

Wheeled Vehicle Mechanic

14-week pipeline · BCT + AIT · Fort Gregg-Adams, VA
Training Pipeline
$34K
14 weeks
Annual MILPERS
$63K
E-4, 3 years service
Equipment Burden
$5K
per year (amortized)
4-Year Total Cost
$307K
DoD investment
4-Year Cost Breakdown
Training Pipeline
$34K11%
Military Personnel (MILPERS × 4yr)
$254K83%
Equipment Burden (× 4yr)
$19K6%
Training: 11% · MILPERS: 83% · Equipment: 6%= $307K
By the Numbers

91Bs are the most numerous mechanic MOS in the Army. With over 200,000 wheeled vehicles in the fleet, the demand for 91B skills never goes away — and civilian diesel mechanics earn $55K–$75K for the same wrench-turning.

Training Pipeline
Duration
14 weeks
Type
BCT + AIT
Location
Fort Gregg-Adams, VA
Pipeline Cost
$34K

91Bs maintain the Army's vast wheeled vehicle fleet — from HMMWVs to FMTVs — using special tool sets worth $18,000 per mechanic. They keep the logistical backbone of the Army moving.

Equipment & Annual Burden
Assigned Equipment
  • ·Shop Set ($18K)
  • ·Diagnostic Equipment (TECOM)
  • ·Automotive Tool Set
  • ·Safety Equipment
Annual Equipment Burden
$5K/yr
Shop tools ($18K initial) + diagnostic equipment amortized
Military Personnel Cost (Annual)
Grade BenchmarkE-4, 3 years service
Base MILPERS$63K/yr
Total Annual MILPERS$63K/yr
Force Structure Context
Annual Accessions~6,800
Avg Career Length6 years
Annual Training Bill$231.2M
Total Force 4yr Cost$2.1B
Read 91B Reviews →← All MOS ProfilesAverage Per-Soldier Cost →
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Cost estimates derived from DoD Comptroller per-soldier analysis, RAND Corporation military personnel studies, CBO military compensation reports, service-specific training cost testimony, and published equipment unit costs. Error margin ±15%. Individual costs vary by duty station, assignment, and deployment tempo. This is Phase 3 of the Honest MOS DoD Budget Intelligence Roadmap.