Most fuel lines can be repaired for no less than $120 dollars. If the fuel line has to be replaced entirely, the cost depends greatly on whether the mechanic has to drop the car’s fuel tank to replace the lines. If so, this can add an additional $400 or $500.Click to see full answer. Also to know is, how much does it cost to replace fuel lines in a car?If you need fuel hose replacement, the average cost can vary a lot depending on the make and model, anywhere from $120 to $500 or even more. Older cars are more susceptible to fuel hose leaks as newer models typically use hard fuel lines more often.Likewise, how much does it cost to fix a gas leak? The price to fix the leak depends on the type of leak and your geographic location. Plumbers usually charge anywhere from $75 to $150 per hour, although in some areas you could pay as little as $50 an hour or as much as $200 an hour. In respect to this, can you drive a car with a fuel line leak? It’s never safe to drive a car with a fuel leak. Fuel leaks are one of the top causes of vehicle fires. Gas is highly flammable, so it is highly likely that the gas could start a fire, either in the vehicle itself or from the fuel left behind from a leaking vehicle.Is it safe to drive a car that smells like gas?If you notice the smell of gas once you get into your vehicle, this could be a sign of a gas leak. A gas leak can be dangerous to drive with because it is flammable and it creates a slick surface for other drivers. A gas leak is one of the leading causes of a vehicle fire. This is because gas is very flammable.