car maintenance log excel

Vehicle Service and Preventive Maintenance Tracker

This system provides a structured framework to monitor the mechanical health, service history, and operational costs of your vehicle. It is designed to track recurring tasks, ensure warranty compliance, and assist in long-term financial planning for automotive upkeep. Update this log immediately following any service event or refueling session to maintain data integrity.

Column Definitions

• Date: Date of service (YYYY-MM-DD). Data Type: Date.
• Service Category: Classification of work (e.g., Oil, Tires, Brakes, Fluid, Inspection). Data Type: Text (Dropdown).
• Description: Detailed summary of parts used or work performed. Data Type: Text.
• Mileage: Odometer reading at the time of service. Data Type: Number.
• Cost: Total expenditure including parts and labor. Data Type: Currency.
• Shop/Technician: Entity that performed the work. Data Type: Text.
• Next Due Date: Projected date for the next recurring service. Data Type: Date.

Calculation Formulas

Total Maintenance Expenditure:

=SUM(E2:E100)

Average Cost Per Service:

=AVERAGE(E2:E100)

Days Until Next Service (for a cell in the "Next Due Date" column):

=DATEDIF(TODAY(), G2, "d")

Data Validation and Formatting Rules

1. Service Category Dropdown: Select the "Service Category" column, go to Data Validation, and choose "List." Enter: Oil Change, Tires, Brakes, Fluid, Inspection, Repair, Other.
2. Overdue Alert (Conditional Formatting): Select the "Next Due Date" column. Use a formula-based rule: =G2<TODAY(). Set the fill color to light red to highlight services that have passed their target date.
3. Mileage Integrity: Select the "Mileage" column. Use Data Validation to set a "Whole Number" rule where the value must be "Greater than" the minimum expected mileage (e.g., 45000) to prevent data entry errors.