Stm Auto Inc is an active interstate carrier based in Ann Arbor, MI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 9 | 0 | 0 |
| Tractors | 6 | 3 | 0 |
| Trailers | 11 | 0 | 0 |
| Total Power Units | 9 | ||
Distinct vehicles · 24 mo
vs 9 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 78% | 94% | Worse than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 88% | 96% | Worse than most peers |
| Controlled Substances | 99% | 100% | Worse than most peers |
| Vehicle Maintenance | 86% | 96% | Worse than most peers |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 2 | — | 6.67% |
| Vehicle | 0 | 10 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 0 | 1 | 1 |
| Apr 1, 2025 | 0 | 0 | 2 | 2 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 55 | 18 | 9 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 18, 2026 | MA | TRUCK TRACTOR | 0 | 0 |
| Dec 17, 2025 | MA | TRUCK TRACTOR | 0 | 3 |
| Dec 8, 2025 | MI | TRUCK TRACTOR | 1 | 0 |
| Dec 4, 2025 | MI | TRUCK TRACTOR | 4 | 0 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 3 | 0.97 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 18 | 8.85 | — |
| Driver Fitness | 1 | 0.56 | — |
| Controlled Substances | 1 | 0.16 | — |
| 4.44% |
Where they run
Inspected in 6 states. Top state MI accounts for 53% of activity. Activity outside home state (MI): 47%.
+1 other state with fewer inspections
| Driver Fitness |
| 3 |
| 1 |
| 2 |
| Unsafe Driving | 3 | 0 | 0 |
| Controlled Substances/​Alcohol | 1 | 1 | 1 |
| Nov 28, 2025 |
| MA |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Oct 31, 2025 | NY | TRUCK TRACTOR | 0 | 0 |
| Oct 27, 2025 | MI | TRUCK TRACTOR | 3 | 0 |
| Oct 24, 2025 | MI | TRUCK TRACTOR | 1 | 1 |
| Oct 8, 2025 | CT | TRUCK TRACTOR | 0 | 0 |
| Oct 8, 2025 | MI | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Dec 8, 2025 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Dec 4, 2025 | 3939ALFTSI | Lighting - Front - Turn signal - inoperative | Vehicle Maintenance | — |
| Dec 4, 2025 | 3929A3 | Drivers view and / or movement is obstructed | Vehicle Maintenance | — |
| Dec 4, 2025 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Dec 4, 2025 | 3963A1BALAC | Brake - Audible air leak from a brake chamber | Vehicle Maintenance | — |
| Oct 27, 2025 | 39345B2BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | Vehicle Maintenance | — |
| Oct 27, 2025 | 3939ALHLI | Lighting - Headlamp(s) - Any inoperative | Vehicle Maintenance | — |
| Oct 27, 2025 | 3939ALTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | Vehicle Maintenance | — |
| Oct 24, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Aug 16, 2025 | 39311A1CSLRR | Conspicuity Systems - Truck tractor lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1 1997 | Vehicle Maintenance | — |