MTTR — Mean Time To Repair
The average time from a vehicle going down to being repaired and back in service.
What Is MTTR — Mean Time To Repair?
Mean Time To Repair (MTTR) measures the average time from when a vehicle goes down to when it's repaired and returned to service. Where MTBF measures how often failures happen, MTTR measures how quickly the workshop recovers from them — and shorter MTTR means less downtime per incident.
Formula
Measure from the moment a defect is reported or a breakdown occurs — not from when a technician starts work — to capture the full delay the vehicle experiences.
Why MTTR — Mean Time To Repair Matters
Availability Multiplier
Cutting MTTR in half effectively halves the downtime impact of every failure that occurs.
Workshop Efficiency Exposed
A rising MTTR often points to parts supply issues or workshop scheduling problems, not technician skill alone.
Customer & Contract Impact
For fleets running contracted routes, MTTR directly affects how reliably delivery windows and SLAs are met.
Typical Benchmark
💡 What's a Good Number?
Track MTTR by defect category and vehicle type rather than as one blended average — a tyre repair and an engine rebuild have very different reasonable timeframes.
How to Improve MTTR — Mean Time To Repair
- Improve First-Time Fix Rate so vehicles aren't returning for the same defect
- Pre-stage parts for the most common repair categories
- Use digital job cards to remove paperwork delays between diagnosis and repair
- Track MTTR trends by technician and by defect type to target training
📌 Track This Automatically
FleetFabric©, paired with BulkDataPro©, captures the underlying fuel, maintenance, and usage data needed to calculate MTTR — Mean Time To Repair per vehicle automatically — no manual spreadsheet reconciliation required. Request a demo to see it against your own fleet data.
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