2023 Hyundai Tucson Smells Like Gas

Common Causes of Fuel Odors in Your 2023 Hyundai Tucson and Essential Safety Measures to Take

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
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40% chance it's the
Emissions Control System
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45% chance it's
Something else
The most common reasons a 2023 Hyundai Tucson 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 2023 Hyundai Tucson 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.

When the fuel filter begins to clog, the engine suffers from fuel starvation. This will cause a significant reduction in power and may also cause a misfire. These conditions may be intermittent, or constant and worsen over time. As the issue progresses, the engine may being to stall immediately after starting, fail to start, hesitate under throttle, or stall at particular angles on hills.

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 are the potential causes and diagnostic steps for a gas smell in a 2023 Hyundai Tucson?

When you notice a gas smell in your 2023 Hyundai Tucson, it's crucial to take a systematic approach to diagnose the issue effectively. Begin by inspecting the vehicle for any visible fuel leaks, as this is often the most straightforward problem to identify. Look underneath the car for signs of fuel pooling or wet spots, which may indicate a leak in the fuel system, such as a faulty fuel injector or damaged fuel line. Next, check the fuel cap; a loose or damaged cap can allow gas vapors to escape, leading to a noticeable odor. If these initial checks do not reveal the source, consider using an OBD-II scanner to check for error codes that could indicate issues with the fuel system or the evaporative emissions system. Additionally, examine the exhaust system for any leaks, as these can sometimes produce a smell similar to gasoline. Lastly, monitor your vehicle's performance for any changes in fuel efficiency or unusual engine behavior, as these can provide further insights into the underlying problem. By following this diagnostic approach, you can effectively identify and address the cause of the gas smell, ensuring your vehicle remains safe and reliable.

What could be causing a gas smell in my 2023 Hyundai Tucson?

If you're detecting a gas smell in your 2023 Hyundai Tucson, it's crucial to identify the underlying cause to ensure your safety and the vehicle's performance. One common issue could be a fuel leak, which may stem from damaged fuel lines, faulty fuel injectors, or even a compromised fuel tank. Additionally, a loose gas cap is often overlooked; if it's not securely fastened after refueling, it can allow fuel vapors to escape, creating an unpleasant odor inside the car. Another potential culprit is a malfunction in the evaporative emissions control system, designed to manage fuel vapors. If this system fails, it can lead to noticeable gas smells. Furthermore, an exhaust system leak, such as a crack in the exhaust manifold or a damaged catalytic converter, can also allow gas odors to infiltrate the cabin. Lastly, be mindful of overfilling your gas tank, as this can cause fuel to spill and generate a strong gas smell. Addressing these issues promptly is essential, and consulting a qualified mechanic can help diagnose and resolve the problem effectively.

What should I do if my 2023 Hyundai Tucson smells like gas?

If you notice a gas smell in your 2023 Hyundai Tucson, it’s essential to act quickly due to the potential safety hazards involved. Ignoring this issue can lead to serious consequences, including fire risks or significant damage to your vehicle. Start by ensuring your safety; park the car in a well-ventilated area away from any ignition sources. Next, conduct a thorough inspection for any visible signs of fuel leaks, particularly around the fuel tank and lines. If you find any leaks or if the smell persists, it’s crucial to refrain from driving the vehicle and seek professional assistance immediately. A qualified mechanic can accurately diagnose and repair any underlying issues, ensuring your vehicle operates safely. Additionally, adhering to a regular maintenance schedule can help prevent future occurrences of gas odors, keeping your Tucson in optimal condition and safeguarding your well-being on the road.

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