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How Much Does It Cost to Repair a Gas Leak In Car

How Much Does It Cost to Repair a Gas Leak In Car

You just struck a curb or hit a piece of debris on the road, and now you smell gas! What’s next?

A gas tank leak can be extremely hazardous and should be repaired immediately. But how much does it cost to repair a gas leak in a car?

Simple answer: The cost to fix a leaking fuel tank typically ranges from $150 to $1,500, depending on the severity and cause of the leak.

Repair TypeTypical Cost RangeDetails
Minor corrosion leaks$150 – $700Fixing small holes or seams in the gas tank via epoxy welds or patches
Fuel line repairs$60 – $120 for simple fixes and $1,000+ for full replacementCost varies based on if the line can be patched vs needing complete replacement
Full gas tank replacement$1,300 – $1,500Includes cost of new tank ($1,000) plus labor ($250-$350)

Key Takeaways: Fuel Tank Leak Repair Cost

  • Small holes or corrosion leaks: $150 – $700
  • Entire gas tank replacements: $1,000 – $1,500
  • Labor costs: $100 per hour (1-3 hours for repair)

Gas leaks are caused by fuel tank corrosion, punctures/damage, improperly installed components, or faulty parts like the fuel pump. Let’s explore the common repair costs and steps to fix these dangerous car issues.

What Causes a Gas Leak in a Car?

There are a few typical culprits when it comes to gas tank leaks:


This was a problem I encountered a lot during my time as a dealer, mainly because I would buy cars at auction that were either older or sitting idle for many years.

Corrosion on a car’s gas tank occurs over time, where exposure to the elements causes the fuel tank’s seams and edges to wear down. This type of leak is easier and cheaper to patch.


If your gas tank gets punctured by debris or in an accident, the entire tank likely needs replacement.

Improper Installation

Incorrectly installed fuel lines, pumps, or caps can result in leaks.

Faulty Components

A malfunctioning fuel pump, for example, may leak from the top of the gas tank.

Replacing an entire corroded gas tank can cost over $1,000 in parts alone. But what if the leak is small or caused by a damaged fuel line?

How Much Does it Cost to Repair a Small Gas Leak?

  • Typical labor costs range from $100 – $150 per hour
  • Leak diagnosis takes about 1 hour
  • Welding an epoxy patch over a small hole adds 1-2 hours of work

So you can expect to pay $250 – $400 for a straightforward fuel tank patch job. This affordable fix should solve leaks caused by minor holes or corrosion damage.

Repairing a leaking fuel line is even cheaper – often only $60 – $120 in total labor costs. Of course, prices also depend on your vehicle make and model.

When Does the Fuel Tank Need Complete Replacement?

Large holes, extensive corrosion, or puncture damage mean the entire fuel tank needs to be replaced and likely additional related components. Here are typical full fuel tank replacement costs:

  • Labor: $500 – $700
  • Parts (new gas tank): $300 – $800
  • Total for replacement: $800 – $1,500+

As you can see, it’s far more expensive to swap the entire tank rather than patch a small leak. Other factors impacting your repair bill include your car type and local labor rates.

How to Fix a Gas Leak In Car?

Because a gas tank repair is extremely serious, I thought that it would be best to show you how to fix a gas leak in a car using a high-ranking video from YouTube where someone with experience shows you how to perform repairs step by step:

How Long Does it Take to Fix a Gas Leak in a Car?

In my experience and research for this article, repairing a fuel leak in a car can take between 1-2 hours for simple leaks and potentially 4-5 hours for more extensive issues. Another major factor, especially in newer cars, is the complexity of accessing the affected components.

Can I Drive with a Gas Tank Leak?

Absolutely not! A leaking fuel system poses immense safety risks. Gasoline is highly flammable. Ignore a known leak, and you risk fire damage and extremely dangerous driving conditions.

It’s crucial to repair any size fuel leak before operating your vehicle again. Call a professional mechanic right away if you spot leaks, smell gasoline, or your fuel gauge acts erratically.

Preventing Costly Gas Tank Leaks

While fuel tanks corrode over time, you can take proactive steps to maximize longevity:

  • Inspect the undercarriage routinely for corrosion
  • Park indoors or in covered areas to limit weather exposure
  • Clean up spilled gas during fill-ups
  • Avoid topping off the tank when filling up

Investing some periodic preventive maintenance now will save you money and headaches down the road! Catching small leaks early or preventing punctures also keeps repair costs low.

My Closing Thoughts

In summary, fuel tank leak repairs range drastically from a couple of hundred dollars for minor fixes to well over $1,000 when replacing the entire gas tank. Act quickly if you detect a leak, have your car inspected as soon as possible, and make minor repairs before extensive damage occurs. Investing in preventive maintenance will also help your fuel system stay leak-free for years to come.

Sources For this Article

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Picture of Steve Momot - Author

Steve Momot - Author

Steve, a seasoned expert in the automotive industry, formerly held a car dealer license in Florida. With extensive experience spanning across car trading and mechanical work, he founded Autohitch. His mission? To guide both buyers and sellers through the intricate maze of car purchasing, ensuring a seamless and informed experience. Outside of the automotive world, Steve has a passion for fishing and capturing the beauty of nature through photography.


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