Cost Per Mile Calculator

🚗 Driving

⛽ Fuel Costs

📋 Fixed Costs (Annual)

🔧 Maintenance & Repairs (Annual)

📉 Depreciation

Average Cost Per Mile by Vehicle Type

Estimates based on AAA Your Driving Costs studies and 15,000 annual miles. Actual costs vary by model, location, driving habits, and ownership length.

How Cost Per Mile Is Calculated

Cost per mile measures the total expense of owning and operating a vehicle for every mile you drive. Unlike a simple fuel economy calculation, it captures every dollar that leaves your wallet because you own a vehicle - fuel, insurance, loan payments, registration fees, routine maintenance, unexpected repairs, and the silent cost most people ignore: depreciation.

The calculation works by summing all annual vehicle-related expenses and dividing by total miles driven in a year. This produces a single number - typically between $0.30 and $1.00+ - that represents your all-in cost per mile. The concept is straightforward, but getting accurate inputs is where most people go wrong. Underestimate depreciation or forget registration fees, and the number becomes misleading.

Vehicle costs fall into two categories: variable costs that scale with mileage (fuel, tire wear, oil changes) and fixed costs that you pay regardless of how much you drive (insurance, registration, loan payments, and a portion of depreciation). This distinction matters because driving more miles per year actually lowers your cost per mile - the fixed costs get spread across more miles. A vehicle that costs $0.70/mile at 12,000 miles/year might drop to $0.58/mile at 20,000 miles/year, even though total annual spending goes up.

This calculator breaks your cost into four categories - fuel, fixed costs, maintenance, and depreciation - then compares your result to the IRS standard mileage rate so you can make informed decisions about tax deductions, ride-sharing profitability, or whether to keep driving your current vehicle versus buying something more efficient.

The Math Behind It

The core formula is simple division applied to each cost category:

Fuel cost per mile = Fuel Price per Gallon ÷ MPG

At $3.50/gallon and 20 MPG, you spend $3.50 ÷ 20 = $0.175 per mile on fuel alone. A vehicle getting 35 MPG at the same fuel price costs only $3.50 ÷ 35 = $0.100 - a 43% reduction in fuel cost per mile.

Fixed costs per mile = (Insurance + Registration + Monthly Payment × 12) ÷ Annual Miles

This is where annual mileage has the biggest impact. At 10,000 miles/year, $8,700 in fixed costs becomes $0.870/mile. At 20,000 miles/year, the same $8,700 becomes $0.435/mile.

Maintenance per mile = Annual Maintenance & Repair Costs ÷ Annual Miles

Depreciation per mile = Annual Depreciation ÷ Annual Miles

If you select the auto-calculate option, depreciation is computed as (Purchase Price − Current Value) ÷ Years Owned to get an annualized figure, which is then divided by your annual mileage.

Total cost per mile = Fuel + Fixed + Maintenance + Depreciation (all per-mile figures summed)

Industry Standards & References

The IRS standard mileage rate for 2026 is $0.725 per business mile (Revenue Procedure 2025-XX), up from $0.70 in 2025. The IRS derives this rate from an annual study of fixed and variable vehicle operating costs conducted by an independent contractor. It accounts for fuel, depreciation, insurance, maintenance, and repairs - but not parking or tolls, which are deducted separately.

AAA's Your Driving Costs study (published annually since 1950) provides benchmark ownership costs by vehicle category. Their 2025 report found the average new-vehicle cost at roughly $0.77/mile based on 15,000 annual miles - with depreciation consistently ranking as the single largest expense category at approximately 35–40% of total cost.

The Federal Highway Administration (FHWA) reports the average American drives approximately 14,263 miles per year (2022 data). Fleet operators often reference the ATRI (American Transportation Research Institute) operational costs report for commercial vehicles, which separates costs into driver-based and equipment-based categories. For personal vehicles, AAA and the IRS rate remain the most widely cited benchmarks.

Step-by-Step Example

Scenario: You own a 2020 Ford F-150 XLT with the 3.5L EcoBoost V6. The truck is paid off, you drive 15,000 miles per year, and you want to know if claiming the IRS standard mileage rate is better than tracking actual expenses for your side business.

Step 1 - Gather your numbers:

• Annual miles: 15,000
• Combined MPG: 20 (EPA-rated 18 city / 24 highway)
• Fuel price: $3.50/gal
• Insurance: $1,800/year
• Registration & taxes: $300/year
• Loan payment: $0/month (paid off)
• Maintenance & repairs: $1,200/year (oil changes, brake pads, one set of tires amortized)
• Depreciation: $3,000/year (purchased at $42,000 in 2020; current value ~$24,000 after 6 years = $18,000 total loss ÷ 6 years)

Step 2 - Calculate each category per mile:

• Fuel: $3.50 ÷ 20 = $0.175/mile
• Fixed costs: ($1,800 + $300 + $0) ÷ 15,000 = $0.140/mile
• Maintenance: $1,200 ÷ 15,000 = $0.080/mile
• Depreciation: $3,000 ÷ 15,000 = $0.200/mile

Result: Total cost per mile = $0.175 + $0.140 + $0.080 + $0.200 = $0.595/mile

Total annual cost: $0.595 × 15,000 = $8,925

Monthly cost: $8,925 ÷ 12 = $744/month

IRS comparison: Your actual cost of $0.595/mile is $0.130 below the 2026 IRS rate of $0.725. That means claiming the standard mileage deduction gives you a larger write-off than itemizing actual expenses. For 10,000 business miles, the standard deduction yields 10,000 × $0.725 = $7,250, while actual costs would only be 10,000 × $0.595 = $5,950 - a difference of $1,300 in your favor.

If this same F-150 still had a $485/month loan payment, fixed costs per mile would jump to ($1,800 + $300 + $5,820) ÷ 15,000 = $0.528/mile, pushing the total to $0.983/mile - well above the IRS rate, making actual-expense tracking the better tax strategy.

Common Mistakes to Avoid

• Ignoring depreciation entirely: Many people calculate only fuel and maintenance, then conclude their car is cheap to drive. Depreciation is typically the largest single cost - AAA's data shows it accounts for 35–40% of total ownership cost for new vehicles. Why it matters: Skipping depreciation can understate your true cost per mile by 30% or more.
• Using EPA highway MPG instead of combined: Real-world fuel economy is almost always lower than the EPA highway rating. Most drivers see combined figures 5–15% below sticker MPG due to city driving, cold starts, A/C use, and cargo weight. Why it matters: Overstating MPG by 5 points on a 20-MPG truck changes fuel cost per mile from $0.175 to $0.140 - a 20% undercount.
• Forgetting irregular maintenance costs: Oil changes and inspections are easy to remember. Tires ($800–$1,200 every 40,000–60,000 miles), brakes ($300–$600 every 30,000–50,000 miles), and timing belt service ($500–$1,000 at ~100,000 miles) happen less frequently but significantly affect your annual average. Why it matters: Amortize big-ticket items over their service interval to get a realistic annual figure.
• Comparing your cost to the IRS rate without context: The IRS standard mileage rate is a tax deduction tool, not a benchmark for whether your vehicle is cheap or expensive to operate. It reflects a national average across all vehicle types. Why it matters: A compact sedan below the IRS rate is normal, not impressive - the rate is set high enough to cover trucks and SUVs too.
• Using purchase price as current value for a paid-off car: A paid-off vehicle still depreciates. If you bought a car for $30,000 five years ago and it's now worth $14,000, you've lost $16,000 in value - $3,200/year. Why it matters: Even without monthly payments, depreciation is real money lost that you won't recover when you sell or trade in.

When to Use This Calculator

• Tax deduction decisions: Compare your actual cost per mile against the IRS standard mileage rate ($0.725 for 2026) to determine whether the standard deduction or actual-expense method saves you more on business mileage.
• Ride-share and delivery profitability: If you drive for Uber, Lyft, DoorDash, or similar platforms, knowing your true cost per mile tells you whether you're actually making money after vehicle expenses - or just converting your car's equity into cash.
• Keep vs. replace analysis: An older vehicle with no loan payment but rising maintenance costs might still be cheaper per mile than a new car with a $600/month payment and steep depreciation. Run both scenarios to compare.
• Fleet and business vehicle selection: If your business operates multiple vehicles, cost-per-mile analysis identifies which models are cheapest to run and when it's time to rotate units out of service.