Vehicle Maintenance Records: What FMCSA Requires and How to Stay Organized

Why Maintenance Records Matter for Carriers

FMCSA requires every carrier to implement a systematic maintenance program under 49 CFR Part 396. That means more than just fixing trucks when they break - you must have documented procedures, schedules, and records that prove you are proactively maintaining your fleet.

Poor maintenance documentation directly impacts your CSA BASIC scores, especially in the Vehicle Maintenance category. High scores attract roadside inspections and compliance reviews. A failed audit or conditional safety rating can cost you loads, insurance premiums, and broker relationships. Keeping maintenance records organized is not optional; it is a core requirement of safe and compliant operations.

Required Maintenance Documents

Carriers must maintain several types of maintenance-related documents for each commercial vehicle:

Annual Inspection Reports

Every commercial motor vehicle must pass an annual inspection performed by a qualified inspector. The inspection must be current within 14 months - meaning you cannot operate a vehicle whose last annual inspection is older than 14 months. The report must be kept on the vehicle and a copy retained by the carrier.

DVIRs (Driver Vehicle Inspection Reports)

Drivers must complete a pre-trip and post-trip inspection daily. When defects are found, they must be reported on the DVIR. Before the vehicle can be dispatched again, the carrier must certify that defects were either repaired or that the vehicle was safe to operate. You need both the driver's report and evidence of repair or certification.

Maintenance and Repair Logs

Keep a record of all repairs, preventive maintenance, and parts replacements for each vehicle. This includes PM schedules, oil changes, brake work, tire replacements, and any defect repairs identified on DVIRs. FMCSA expects you to have a systematic schedule and documentation that work was completed.

Roadside Inspection Reports

When DOT conducts a roadside inspection, the report goes on your carrier record and affects your CSA scores. Keep copies of all roadside inspection reports so you can track patterns, dispute errors, and demonstrate that out-of-service defects were corrected.

Retention Requirements

FMCSA specifies how long you must keep each type of maintenance record:

• Annual inspection - Keep for 14 months. Since the inspection must be current within 14 months, retaining the previous report covers the overlap period.
• DVIRs - Keep for at least 3 months from the date the report was prepared. Many carriers retain them longer for audit readiness and defect tracking.
• Maintenance logs - Keep for 1 year minimum, plus 6 months after the vehicle leaves your fleet. If you sell or retire a truck, you must still retain its maintenance records for that additional 6 months.
• Roadside inspections - Keep for CSA tracking and audit defense. There is no explicit minimum, but inspectors will ask for them. Retaining 3 years aligns with other FMCSA record requirements.

What DOT Inspectors Look For During Maintenance Audits

During a compliance review or focused audit, FMCSA inspectors will examine your maintenance program for evidence of systematic practices:

• Systematic program evidence - A written maintenance policy or schedule that defines PM intervals, inspection requirements, and defect repair procedures.
• Current annual inspections - Every power unit and trailer in the sample must have an annual inspection dated within the last 14 months.
• DVIR process compliance - Daily pre/post trip reports on file, with defects documented and repair certifications or driver sign-offs showing defects were addressed before dispatch.
• Defect repair documentation - When a DVIR lists a defect, there must be a corresponding repair record or certification that the vehicle was safe to operate. Inspectors will trace defects to verify they were not ignored.

Common Violations

These maintenance-related violations appear frequently in FMCSA compliance review results:

• Expired annual inspections - Operating a vehicle whose last annual inspection is older than 14 months. This is an immediate out-of-service condition and a serious violation.
• Missing DVIRs - No daily inspection reports on file, or gaps in the record. Drivers must complete them every day they operate the vehicle.
• No evidence defects were repaired before dispatch - DVIRs show defects but there is no repair record or certification that the vehicle was safe to operate. Carriers cannot dispatch a vehicle with known defects until they are repaired or certified.
• No systematic maintenance schedule - Repairs are done reactively with no documented PM program. FMCSA expects preventive maintenance on a regular schedule, not just when something breaks.

Organizing Maintenance Records by Vehicle

The most effective approach is to track maintenance per unit. Each truck and trailer should have its own folder or digital record containing annual inspections, DVIRs, repair logs, and roadside inspection reports. That way, when an inspector asks for maintenance records for Unit 7, you can produce everything in one place.

• Tracking per unit - Assign a unit number to every power unit and trailer. All maintenance documents for that unit should be filed together, sorted by date. This makes audits and defect tracing straightforward.
• Setting up inspection reminders - Annual inspections expire at 14 months. Set reminders 60–90 days before expiration so you can schedule the inspection before you are out of compliance. Same for PM schedules - oil changes, brake inspections, and tire rotations should have due dates that trigger alerts.
• Digital vs paper systems - Paper filing works for very small fleets but becomes unmanageable as you grow. Digital systems let you search by unit, date, or document type, attach photos of repairs, and set automatic reminders. When an auditor requests records, you can export or display them instantly instead of digging through file cabinets.

Stay Ahead of Maintenance Compliance

Maintenance recordkeeping is not just about avoiding fines - it protects your safety rating, your CSA scores, and your ability to secure loads from brokers who screen carriers. MegaTMS helps you organize maintenance documents by vehicle, track annual inspection and PM due dates, and keep DVIRs and repair records in one searchable place. When DOT asks for your maintenance program, you are ready.