Before a road trip, two numbers decide whether driving beats flying or the train: how much fuel you'll burn and what it will cost. Enter the distance, your car's consumption, and the pump price — the calculator does the rest.
工作原理
Consumption in liters per 100 km (the standard on European and most modern car labels) is scaled to your trip distance to get total liters, then multiplied by the price per liter.
公式
If your car reports km/L instead, convert: L/100km = 100 ÷ (km/L). For US mpg: L/100km = 235.2 ÷ mpg.
计算示例
A 450 km trip in a car burning 8 L/100km with fuel at 2.33 per liter: 450 × 8 ÷ 100 = 36 liters, costing 36 × 2.33 = 83.88.
常见问题
Why does my real consumption exceed the brochure figure?
Official figures come from standardized lab cycles. City traffic, air conditioning, roof racks, low tires, and aggressive acceleration commonly add 10–30%. Use your car's real long-term average for honest trip estimates.
How should we split fuel costs among passengers?
Divide the calculator's total by the number of occupants. Many groups add a small share for wear and tear — commercial mileage rates suggest vehicle costs are roughly double the fuel alone.
Does speed really change consumption that much?
Above ~90 km/h, aerodynamic drag grows with the square of speed. Cruising at 130 instead of 110 typically burns 15–25% more fuel for the same distance.