Aerodynamic Drag Fuel Cost Calculator
Estimate how aerodynamic accessories like roof racks, bike carriers, and cargo boxes increase fuel costs from added drag.
Driving efficiency and MPG optimization tools. Browse our free efficiency tools below — no sign-up required.
Estimate how aerodynamic accessories like roof racks, bike carriers, and cargo boxes increase fuel costs from added drag.
Calculate your vehicle's CO₂ emissions per mile from fuel type and MPG. Compare against average and see annual carbon footprint.
Estimate how cold weather reduces your vehicle's MPG and increases fuel costs. Compare warm vs cold weather fuel economy.
Compare fuel economy of two vehicles side by side. See annual cost difference and MPG savings over any driving distance.
Calculate your actual combined MPG based on your city/highway driving split. Compare fuel costs for your specific driving mix.
Calculate how much fuel and money you waste idling your engine. See daily, monthly, and annual idling costs.
Calculate how your roof rack affects fuel economy. Compare empty rack, loaded rack, and no-rack MPG and annual fuel costs.
See how driving speed affects fuel economy. Calculate extra fuel cost from driving faster and find your vehicle's optimal speed.
Calculate how under-inflated tires affect your fuel economy. See MPG loss and extra annual fuel cost from low tire pressure.
Calculate how extra vehicle weight affects fuel economy. See MPG loss from cargo, passengers, and aftermarket parts.