2021 Kia Sorento Smells Like Gas

Causes of Fuel Odors in Your 2021 Kia Sorento and Essential Safety Precautions 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
0%
40% chance it's the
Emissions Control System
0%
45% chance it's
Something else
The most common reasons a 2021 Kia Sorento 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 2021 Kia Sorento 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.

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 steps to diagnose a gas smell in a 2021 Kia Sorento?

When diagnosing a gas smell in your 2021 Kia Sorento, it's crucial to take a methodical approach that begins with the simplest checks before moving on to more complex issues. Start by inspecting the area under your vehicle for any visible signs of gasoline leaks, such as dripping fuel or wet spots around the fuel tank and fuel lines. Next, verify that the fuel cap is securely tightened, as a loose or damaged cap can easily allow gas odors to escape. After that, examine the fuel lines for any cracks or damage, which are common sources of leaks. It's also important to check the fuel injector for any signs of leakage, as a faulty injector can contribute to the gas smell. Additionally, inspect the fuel tank itself for any damage or leaks that could be causing the odor. If these initial checks do not reveal the source of the smell, it may be necessary to consult a qualified mechanic for a more comprehensive inspection. By following this diagnostic approach, you can effectively identify and resolve the source of the gas smell in your vehicle.

What could be causing a gas smell in my 2021 Kia Sorento?

If you're detecting a gas smell in your 2021 Kia Sorento, it's crucial to understand the common problems that could be at play. One of the primary culprits is a fuel leak, which can stem from damaged fuel lines, faulty fuel injectors, or issues with the fuel tank itself. Addressing a fuel leak is vital for safety, as it poses a fire hazard. Another frequent cause is a loose gas cap; ensuring that your gas cap is securely tightened after refueling can prevent fuel vapors from escaping. Additionally, problems with the evaporative emissions system, which manages fuel vapor release, may lead to a gas smell. Components like the charcoal canister or purge valve can malfunction, resulting in noticeable odors. It's also worth considering the exhaust system; a leak in this area, such as a damaged muffler or exhaust pipe, can produce a gas-like smell inside the vehicle. Lastly, spilled gasoline, whether inside the car or around the fueling area, can create a strong odor that may linger. If you encounter a gas smell, it's advisable to conduct a thorough inspection or consult a qualified mechanic to ensure your vehicle remains safe and functional.

How urgent is it to address the gas smell in my 2021 Kia Sorento?

Addressing a gas smell in your 2021 Kia Sorento is not just a minor inconvenience; it is a pressing safety concern that requires immediate attention. The presence of gasoline fumes can indicate a fuel leak, which poses a significant fire hazard and increases the risk of explosion. Moreover, inhaling these fumes can lead to serious health issues, including dizziness, headaches, and nausea, particularly with prolonged exposure. Ignoring this warning sign can also result in further damage to your vehicle, leading to more extensive and costly repairs down the line. Therefore, it is essential to act swiftly by having your vehicle inspected by a qualified mechanic to identify and rectify the source of the gas smell. Prioritizing this issue not only safeguards your health and safety but also protects your investment in your vehicle.

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2021 Kia Sorento Gas Smell Issues: Causes & Repairs