2015 Ford Focus Smells Like Gas

Identifying the Causes of Gas Smells in Your 2015 Ford Focus and How to Address Them Safely

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
0%
40% chance it's the
Emissions Control System
0%
45% chance it's
Something else
The most common reasons a 2015 Ford Focus smells like gas are the gas cap, the fuel system, or the emissions control system.
  • Gas Cap: A loose or damaged gas cap can cause fuel vapors to escape, triggering the check engine light and potentially affecting fuel system pressure.
  • Emissions Control System: A faulty emissions control system can lead to increased hydrocarbon emissions and trigger the check engine light due to malfunctioning components like the EGR valve or O2 sensors.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2015 Ford Focus smells like gas?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A failing catalytic converter can cause a vehicle to fail emissions tests and turn on the check engine light. The exhaust might have an unusual smell. A restricted catalytic converter can result in a loss of engine power.

» LEARN MORE: How to tell if your catalytic converter is failing

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. The canister may also cause difficulty starting the engine, a rough idle, and poor fuel mileage.

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. A fuel tank leak may also cause difficulty starting the engine, a rough idle, and poor fuel mileage. When a fuel tank is simply corroded to the point of failure, the exterior tank condition rarely shows damage. The inside of the fuel tank will be rusted or corroded, and rust flakes or other debris may be floating in the fuel.

For most vehicles, the only symptom will be a check engine light or fuel tank filler cap light illuminating on the driver instrument cluster. This is to signal that there is an evaporative emissions (EVAP) leak. In some situations, the vehicle may take longer than normal to start, or, more rarely, the engine may not start at all. on-board diagnostic (OBD) trouble codes will refer to EVAP system failures such as a small or massive EVAP system leak. Lastly, the powertrain control module may notice a lean running condition, which could even lead to random and infrequent misfires.

What steps should I take to diagnose the gas smell in my 2015 Ford Focus?

To effectively diagnose the gas smell in your 2015 Ford Focus, start with a thorough visual inspection of the engine bay and undercarriage for any signs of gasoline leaks, as these can pose serious safety risks. Next, examine the fuel system components, including fuel lines and injectors, for any visible damage or leaks that could be contributing to the odor. Pay attention to the emissions control system, as malfunctions here can also lead to a gas smell. If you notice a burning rubber scent alongside the gas odor, this could indicate a slipping belt, which warrants further investigation. Additionally, inspect the filler neck area closely, as leaks or damage in this region can be a common source of fuel smells. Don't overlook the exhaust system; strong gas or exhaust fumes entering the cabin may suggest an exhaust manifold gasket leak. Lastly, monitor your fuel consumption for any sudden changes, as this can signal underlying issues. If these steps do not reveal the source of the smell, or if you suspect a more serious problem, it is wise to seek professional assistance to ensure your vehicle is safe and functioning properly.

What could be causing my 2015 Ford Focus to smell like gas?

If you're noticing a gas smell in your 2015 Ford Focus, it's essential to understand the common problems that could be causing this issue. One of the most frequent culprits is a fuel leak, which can occur in various parts of the fuel system, including the fuel tank, lines, or injectors. This not only poses a fire hazard but can also impact your vehicle's performance, making it crucial to address immediately. Another potential cause is a faulty fuel injector, which may not be delivering the correct amount of fuel to the engine, resulting in a noticeable gas odor. Additionally, issues with the evaporative emissions system, such as a malfunctioning charcoal canister or leaks, can lead to fuel vapors escaping and creating a gas smell inside the car. Don't overlook the possibility of a loose or damaged gas cap, as this can also allow vapors to escape. Lastly, problems with the exhaust system, including leaks or a damaged catalytic converter, can contribute to the gas smell. For those who prefer a DIY approach, start by inspecting the gas cap and looking for visible leaks in the fuel system. However, for more complex issues, consulting a qualified mechanic is advisable to ensure safety and proper vehicle function.

How urgent is it to address a gas smell in my 2015 Ford Focus?

When you notice a gas smell in your 2015 Ford Focus, it is essential to act swiftly due to the serious implications of a potential fuel leak. Ignoring this warning sign can lead to significant safety risks, including the possibility of a fire or explosion, especially if the gas comes into contact with hot engine parts. Additionally, inhaling gasoline fumes poses health risks, such as dizziness and nausea, which can impair your ability to drive safely. The fuel system may be compromised, indicating a need for immediate inspection and repair to prevent further damage to your vehicle and ensure the safety of you and your passengers. Therefore, do not delay in seeking professional assistance to diagnose and resolve the issue, as timely intervention is crucial for your safety and the proper functioning of your car.

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