Purchase vs Failure Mileage in Drivetrain Claims

**Transmission**: median **purchase ~153k mi**, **failure ~169k mi**, **570 mi since install** to claim. **Engine**: **purchase ~150k mi**, **failure ~163k mi**, **278 mi since install**. **Miles since install** matters more for warranty review than purchase mileage alone.

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- **Median purchase mileage** and claim patterns across compared cohorts - **Named model examples** with sales volume and mileage bands - Why some applications cluster **earlier or later** in miles - **Reman vs used** or make-comparison context where relevant - What to prepare **before ordering** and document after install ## What Odometer Readings Appear in Claims Data?

| Vertical | Median purchase mi | Median failure mi | Median mi since install | |----------|-------------------:|------------------:|------------------------:| | **Transmission** | **~153,000** | **~169,000** | **570 mi** | | **Engine** | **~150,000** | **~163,000** | **278 mi** |

Early window dominates — 0–500 mile hub: /blog/drivetrain-claims-first-500-miles-after-install (**1,029 trans + 324 engine** claims).

| Reading | When | |---------|------| | Odometer at delivery | Activation + baseline | | Odometer at symptom | Claim intake | | Miles since install | Derived — must match invoices |

Many transmission warranty reviews involve the **first 500 miles** after install — often fluid, cooler flow, seals, or programming — regardless of pre-replacement mileage.

Before any unit is removed under warranty:

• Odometer photos at delivery and at symptom onset
• Scan tool report (stored and pending codes)
• Fluid type, level, and condition notes
• Install invoice with date and shop name
• Photos of leaks **before** cleanup

Full checklist: required documents for a warranty claim: /blog/documents-required-warranty-claim · drivetrain claims in the first 500 miles: /blog/drivetrain-claims-first-500-miles-after-install

> Before any unit is removed or replaced, document the symptom, save scan results or inspection notes, and contact support with the installation details so the issue can be reviewed accurately.

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• Warranty policy and Expedia Protection: /warranty
• Warranty activation — 14-day rule: /blog/warranty-activation-14-day-rule
• Documents required for a warranty claim: /blog/documents-required-warranty-claim
• Reman transmission won’t shift after install: /blog/reman-transmission-wont-shift-after-install
• When your transmission needs a reflash: /blog/when-transmission-needs-reflash
• Engine won’t start after install: /blog/engine-wont-start-after-install