Road Trip Fuel Cost Calculator

Among European Union countries, fuel tends to be cheapest in Bulgaria, Poland, and Romania. Western European countries like the Netherlands, Italy, and Denmark have the highest fuel taxes and consequently the most expensive petrol prices. Fuel prices in the US are generally much lower than anywhere in Europe.

Maintain steady speeds between 80 and 100 kilometers per hour for optimal highway efficiency; fuel consumption increases sharply above this range. Keep tires inflated to the recommended pressure, remove unnecessary weight and roof racks when not in use, and use cruise control on flat highways.

Diesel cars typically offer 15 to 30 percent better fuel economy, and diesel fuel is often cheaper than gasoline in most European countries. However, many cities now impose low-emission zone restrictions and diesel surcharges. Check your route for any diesel restrictions before choosing a rental.