Free Gas and Mileage Log Template For Excel & Google Sheets

This gas and mileage log template is designed for recording travel distance and fuel purchases in one ongoing record. Each row connects the date of travel, miles driven, gallons purchased, and total fill-up cost, then calculates cost per gallon, miles per gallon, and cost per mile automatically. That makes the template useful for vehicle expense tracking, business mileage records, reimbursement documentation, delivery driving, and routine fuel monitoring. It is also useful when you want to review how fuel prices and driving distance affect overall travel costs over time.

Because the calculations update from the entries in the log, the gas and mileage log template does more than record receipts. It turns each fuel entry into a usable driving record that can be reviewed later for budgeting, reporting, and mileage comparison. Below is a detailed look at how each part of the template should be completed and how the calculations should be read.

How to Use This Gas and Mileage Log Template

Before entering data, decide what one row will represent in your record. In most cases, each row should match one fuel purchase and the miles driven since the previous logged fill-up. Keeping that method consistent gives the calculated mileage and cost figures more meaning across the full log.

Dashboard Summary

The top section serves as a dashboard that calculates average results from the entries below. It displays average miles per trip, average gallons used per trip, average cost per trip, average cost per gallon, average miles per gallon, and average cost per mile. These values update as more rows are completed.

This section is useful when you want a quick reading of how your fuel spending and driving efficiency are changing. For example, a rise in average cost per gallon may point to higher fuel prices, while a drop in average miles per gallon may suggest heavier traffic, different routes, seasonal driving changes, or vehicle maintenance issues.

Date of Travel

Enter the date tied to the travel period or fuel purchase. You may choose to record the fill-up date, the end date of the driving interval, or another method that matches your records. The important part is consistency. When the dates follow one method throughout the log, the entries are easier to review and compare later.

If this template is being kept for reimbursement, tax records, or company driving logs, it is worth matching the date format and timing method used in your receipts or expense reports.

Miles Travelled

In this column, enter the number of miles driven during the period tied to that fill-up. This is usually not the full odometer reading. Instead, it is the distance driven since the last logged fuel purchase. If you track odometer readings separately, subtract the earlier reading from the later one and enter only the difference here.

This number affects two important calculations in the template. It is used to calculate both miles per gallon and cost per mile. Because of that, estimated or inconsistent entries can change the results more than expected.

Gallons Purchased

Enter the number of gallons purchased during the fill-up. This amount should come directly from the gas receipt or pump display. Since the template uses this number to calculate fuel efficiency and fuel price per gallon, it is best to record it exactly as purchased.

If you often buy small top-up amounts instead of filling the tank on a more regular cycle, the mileage readings may vary more from row to row. That does not make the log unusable, but it does mean the averages should be read with that pattern in mind.

Total Fill-up Cost

This column records the full amount paid for that fuel purchase. Enter the exact total charged at the pump. Once entered, the template calculates cost per gallon and cost per mile from this figure.

This column becomes especially useful when reviewing travel costs across several weeks or months. A higher fill-up cost does not always mean the vehicle used more fuel. It may reflect a higher fuel price during that purchase period.

Cost Per Gallon

This calculated column divides the total fill-up cost by gallons purchased. It shows the effective price paid per gallon for that entry. Since fuel prices can vary by date and location, this figure is useful when comparing fill-ups over time.

If you buy fuel in different cities or during periods of changing gas prices, this column gives context to the rest of the log. It separates fuel price changes from changes in vehicle efficiency.

Miles Per Gallon

This column divides miles traveled by gallons purchased. It gives the fuel economy for that entry based on the numbers recorded in the row. Over time, this can show whether the vehicle is performing consistently or if mileage has started shifting.

Miles per gallon figures are most dependable when each row reflects a similar fueling habit. Logging travel after partial fill-ups is still possible, but those entries may produce less stable comparisons.

Cost Per Mile

This calculated column divides the total fill-up cost by miles traveled. It shows how much each mile cost during that recorded interval. This figure is useful when reviewing travel expenses for work, delivery routes, client visits, or regular commuting.

For users focused on budgeting, this field can be one of the most useful parts of the template because it connects fuel expense directly to travel distance instead of only showing total gas spending.

Customizing the Template

This template can be adjusted to fit different recordkeeping needs. If you use one vehicle for both personal and business driving, keeping separate copies can make expense review easier. If you track several vehicles, duplicating the sheet for each one keeps the averages tied to the correct driving history.

You can also add more rows as the log grows. When extending the table, copy the formulas from the last completed calculated row into the new rows so the cost and mileage fields continue updating properly. If more trip detail is needed, extra columns can be added for destination, trip purpose, starting odometer, ending odometer, driver name, or reimbursement category.

Wrap-Up

This gas and mileage log template is available in Excel and Google Sheets, so it can be updated digitally, duplicated for separate vehicles, or printed for manual records. It is designed for ongoing use, which makes it suitable for weekly entries, monthly review, or year-round mileage tracking. For the best long-term record, keep the entry method consistent and expand the table before the log becomes crowded with later additions.

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