Trip fuel and cost for legs with different mileage (city, highway), tank range, ...

{ "method": "GET", "queryParams": { "altEconomy": 40, "legs": "city:40:24; highway:260:33", "people": 2, "pricePerUnit": 3.5, "tankSize": 14 }, "type": "http" }

{ "example": { "alternativeCost": 26.25, "alternativeFuel": 7.5, "alternativeSavingsOrExtra": 7.16, "asOf": "2026-10-11T14:38:37.389Z", "averageEconomy": 31.43, "cost": 33.41, "costPerDistance": 0.1114, "costPerPerson": 16.7, "degraded": false, "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.", "distance": 300, "distanceUnit": "miles", "fuel": 9.545, "fuelUnit": "gallons", "legs": [ { "cost": 5.83, "distance": 40, "fuel": 1.667, "leg": "city" }, { "cost": 27.58, "distance": 260, "fuel": 7.879, "leg": "highway" } ], "notChecked": [ "real consumption: speed, load, wind, hills, cold weather, air conditioning and driving style change economy by 10 to 30%", "price changes along the route and the detour to a station", "…2 more" ], "rangePerTank": 396, "reasons": [ "Fuel = miles / mpg per leg; cost = fuel x price.", "Refuel stops = ceil(total fuel / usable tank) - 1, with the reserve share left in the tank." ], "refuelStops": 0, "roundTrip": false, "source": "computed locally", "summary": "300 miles uses 9.55 gallons and costs 33.41 (0.111 per mile, 16.7 each for 2). A 14-gallon tank with 10% reserve goes about 396 miles; 0 refuel stops needed. The comparison vehicle (40 mpg) would cost…", "tankReservePercent": 10, "usableTank": 12.6, "verdict": "COMPUTED" }, "type": "json" }