How to Use the Camper Van Fuel Cost Calculator
Enter your one-way trip distance, select round-trip if applicable, and input your RV's miles per gallon and the current gas price per gallon. The calculator will show you the total gallons needed, estimated fuel cost, and cost per 100 miles driven.
Fuel Cost Formula
Gallons needed = Total miles ÷ MPG
Fuel cost = Gallons needed × Gas price per gallon
RV MPG Reference Guide
Class B camper vans like the Mercedes Sprinter conversion or Winnebago Travato typically achieve 18–24 mpg on the highway. Class C RVs such as the Thor Chateau or Coachmen Freelander get 10–18 mpg. Class A motorhomes (Tiffin, Newmar, Entegra) get 6–12 mpg. Diesel-powered RVs often outperform gasoline equivalents by 20–30%, especially on long highway trips. Altitude, headwinds, and heavy loads all reduce real-world mpg.
Finding Cheap Gas on Your Route
Gas prices vary significantly by state. States like Texas, Oklahoma, and Louisiana tend to have lower prices, while California, Hawaii, and New England are usually more expensive. Apps like GasBuddy, Waze, and Google Maps show real-time prices at stations along your route. Filling up just before entering high-price states can save $20–$50 per tank.
Frequently Asked Questions
Renting makes sense for 1–3 weeks annually. Rentals typically cost $150–$350/night for a Class B, and fuel is extra. For frequent use (4+ weeks/year), buying may be more economical over 3–5 years. Rental platforms like Outdoorsy and RVshare have expanded options beyond dealerships.
Yes — towing adds aerodynamic drag and weight. Towing a vehicle or trailer can reduce mpg by 20–40% depending on the tow weight and the RV's powertrain. Factor this into your fuel calculations if you plan to flat-tow or use a trailer.
A coast-to-coast trip of ~3,000 miles round trip (6,000 miles total) in a Class C RV at 12 mpg consumes about 500 gallons. At $3.50/gallon, that's $1,750 in fuel. Add 10–20% buffer for detours, idling, and generator use for a real-world estimate of $1,900–$2,100.