Why does driving cost more than just gas?

Fuel is only part of the picture. The IRS standard mileage rate captures depreciation, maintenance, tires, and wear that every mile inflicts on your car. Houston commuters also pay for parking, which can run around $125 per month downtown.

What is the METRO pass price used here?

Houston METRO sells a local monthly pass at roughly $50. You can override this field with the exact fare for your route, since park-and-ride and express services cost more than local bus and light rail.

How is depreciation calculated?

The tool applies the IRS business mileage rate per mile driven. This rate is designed to reflect the true per-mile cost of operating a vehicle beyond fuel, so it gives a realistic total cost of ownership for your commute.

Does this include tolls?

Houston has extensive toll roads like the Sam Houston Tollway. This calculator does not separately model tolls, so add your monthly toll spend to the driving total if your route uses them.

Should I count my time as a cost?

This tool measures out-of-pocket money only. If transit is slower or faster door to door, weigh that time separately against the dollar difference the calculator reports.

Houston Commute Cost Calculator

Houston is built for the car, but that convenience has a price that is easy to underestimate. This calculator adds up fuel, parking, and the true per-mile cost of wear on your vehicle, then compares the total to a METRO monthly pass so you can see which option actually leaves more money in your pocket.

How it works

The monthly driving cost combines three parts, and transit is a single pass price:

round trip miles = one-way miles × 2
monthly miles    = round trip miles × commute days
fuel cost        = (monthly miles / mpg) × gas price
depreciation     = monthly miles × IRS mileage rate
driving total    = fuel cost + depreciation + monthly parking
transit total    = METRO pass price

The IRS standard mileage rate is the key insight: it bundles maintenance, tires, and depreciation into a single per-mile figure, which is why driving almost always costs far more than the gas alone suggests.

Example and tips

A 12-mile one-way commute, 22 days a month, at 25 MPG and Houston gas around $3.00, burns about $63 in fuel — but with $125 parking and depreciation on 528 monthly miles, the all-in driving cost climbs well past $300. A $50 METRO pass looks very different at that point. Keep your MPG honest: stop-and-go Houston freeway traffic delivers far lower real-world economy than the highway sticker.