--- title: How Steer Estimates Predictive Mileage-Based Maintenance Reminders description: Steer estimates a vehicle’s current odometer value to enable precise, vehicle-specific maintenance reminders. The estimation adapts based on the amount and quality of data available. 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[Help Center](https://help.steercrm.com/knowledge?hsLang=en) 2. [Marketing](https://help.steercrm.com/knowledge/marketing?hsLang=en) 3. [Maintenance Reminder Campaigns](https://help.steercrm.com/knowledge/marketing?hsLang=en#maintenance-reminder-campaigns) September 25, 2025 # How Steer Estimates Predictive Mileage-Based Maintenance Reminders ### **Estimated Odometer Logic Explained** Steerestimates a vehicle’s current odometer value to enable precise, vehicle-specific maintenance reminders. The estimation adapts based on the amount and quality of data available. This guide explains how Steer uses values to calculate the odometer estimate, depending on the vehicle data we have. Click the examples below to view calculations for different scenarios: - **[Vehicle with 2+ Invoices](https://help.steercrm.com/knowledge/how-steer-estimates-predictive-mileage-based-maintenance-reminders#vehicle-two-plus-invoices)** - **[Vehicle with 1 Invoice](https://help.steercrm.com/knowledge/how-steer-estimates-predictive-mileage-based-maintenance-reminders#vehicle-one-invoice)** - **[New Vehicle — No Known Odometer](https://help.steercrm.com/knowledge/how-steer-estimates-predictive-mileage-based-maintenance-reminders#no-known-odo)** - **[Vehicle with New Invoice Showing 0 Odometer](https://help.steercrm.com/knowledge/how-steer-estimates-predictive-mileage-based-maintenance-reminders#no-known-odo)** Each use case uses a different combination of **usage classification, projection, and actual data** to maximize accuracy. ### Example: Vehicle with 2+ Invoices **Type:** Actual Pattern + Classification **How it works:** - Calculate the actual daily rate between the two most recent invoice odometer readings. - Classify the vehicle into a usage category based on this rate. - Use the actual pattern, along with the category’s standard daily rate, for future projections. **Formula:** **Step 1:** Actual Daily Rate = (Recent Odometer – Previous Odometer) ÷ Days Between Invoices **Step 2:** Classify the vehicle into a usage category based on the actual daily rate **Step 3:** Estimated Odometer = Most Recent Odometer + (Days Since Last Invoice × Category Daily Rate) **Example:** *Vehicle:* Honda 2022 *Previous invoice:* July 1, 2023, odometer 20,000 miles *Recent invoice:* January 1, 2024, odometer 25,000 miles *Days between invoices* = 184 days *Actual Daily Rate* = (25,000 – 20,000) ÷ 184 ≈ 27.17 miles/day → Classified as Normal Usage (33 miles/day for estimate) *Days since last invoice to today* (August 20, 2025) = 596 days *Estimated Odometer* = 25,000 + (596 × 33) = 25,000 + 19,668 = 44,668 miles ### Example: Vehicle with 1 Invoice **Type:** Classification + Projection **How it works:** - Calculate the actual daily mileage rate from the invoice odometer and days elapsed since July 2nd. - Classify the vehicle into a usage category based on this rate. - Use this category’s standard daily rate for future estimates. **Formula: Step 1:** Actual Daily Rate = (Invoice Odometer – 0) ÷ Days Since July 2nd **Step 2:** Estimated Odometer = Invoice Odometer + (Days Since Invoice × Category Daily Rate) **Example:** *Vehicle:* Honda 2022 *Invoice date:* January 15, 2024 *Invoice odometer:* 15,000 miles *Days since July 2, 2022 to invoice date* = 562 days *Actual Daily Rate* = 15,000 ÷ 562 ≈ 26.7 miles/day → Classified as Normal Usage (33 miles/day for estimate) *Days since invoice to today* (August 20, 2025) = 583 days *Estimated Odometer* = 15,000 + (583 × 33) = 15,000 + 19,239 = 34,239 miles ### Example: New Vehicle — No Known Odometer **Type:** Usage-Based Estimate **How it works:** - Determine the vehicle usage category based on driver habits (e.g., Low, Moderate, Normal, High, Very High). - Use the vehicle’s midpoint year (July 2nd) as a reference point. - Calculate the days elapsed since July 2 to today. - Multiply days by the standard daily rate for the usage category. **Formula:** Estimated Odometer = Days Since July 2nd × Daily Rate for Usage Category **Example:** *Vehicle:* Honda 2022, assumed Normal Usage (33 miles/day) *Date today:* August 20, 2025 *Days since July 2, 2022* = 1164 days *Estimated Odometer* = 1164 × 33 = 38,412 miles **Note:** All vehicles start in the Normal Usage category by default; this setting can be customized by either the tenant or the vehicle. ### Example: Vehicle with New Invoice Showing 0 Odometer - Unusual Values Type: Unusual Values How it Works: - Skip new invoices where the odometer reading is zero (invalid/outlier). - Do not reset or alter the vehicle odometer history or estimate based on this information. - Continue using the last valid odometer value and established usage category.  **Example:** *Vehicle:* Honda 2022 *Last valid odometer (January 1, 2024 invoice)*: 25,000 miles *New invoice (August 10, 2025) reports odometer* = 0 → **Ignored** *Estimate continues from the last valid value of 25,000 plus projected usage according to the established category.* ### **Summary** Steer predicts Odometer for vehicles using intelligent, layered logic tailored to the amount and quality of data to produce highly accurate, vehicle-specific odometer estimates. 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