2021 Jeep Renegade Smells Like Gas

Common Causes of Gas Smells in Your 2021 Jeep Renegade and Essential Safety Measures to Take

Find Repair Location
Reviewed by
Aisha
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 Jeep Renegade 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 Jeep Renegade 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 are the initial diagnostic steps to take when a 2021 Jeep Renegade smells like gas?

When faced with a gas smell in your 2021 Jeep Renegade, it's essential to adopt a systematic diagnostic approach to identify the issue efficiently. Start by checking for visible leaks around the vehicle, as this can quickly reveal if there's a significant problem. Next, inspect the fuel cap to ensure it is tightly secured, as a loose cap can often be the culprit behind gas odors. Moving under the hood, examine the fuel lines and connections for any signs of wear or damage, tightening any loose fittings and replacing any compromised parts. Additionally, pay attention to the fuel injector O-rings, as worn or damaged O-rings can lead to fuel leaks and odors. It's also wise to inspect the evaporative emissions control system, which can sometimes malfunction and cause gas smells. Finally, using a diagnostic scanner to check for error codes can provide further insights into any underlying issues with the fuel system. By following this structured approach, you can effectively diagnose and address the source of the gas smell in your Jeep Renegade.

What could be causing a gas smell in my 2021 Jeep Renegade?

When you detect a gas smell in your 2021 Jeep Renegade, it’s crucial to identify the underlying cause to ensure both 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 tightened after refueling, it can lead to gas vapors escaping. Another potential culprit is a malfunction in the evaporative emissions system, designed to manage fuel vapor release from the tank. Furthermore, an exhaust system leak, particularly near the engine, can produce a gas-like odor inside the cabin. Lastly, overfilling the gas tank can cause fuel to spill, resulting in a persistent smell. If you experience this issue, it’s advisable to conduct a thorough inspection or consult a qualified mechanic to diagnose and rectify the problem effectively.

How urgent is it to address the gas smell in my 2021 Jeep Renegade?

Addressing a gas smell in your 2021 Jeep Renegade is not just a matter of inconvenience; it is a critical safety concern that demands immediate attention. Ignoring this warning sign can lead to severe consequences, including the risk of fire or explosion due to gasoline leaks, especially if an ignition source is present. Furthermore, the health implications of inhaling gasoline fumes are significant, with symptoms ranging from dizziness and headaches to more serious respiratory issues with prolonged exposure. Additionally, a gas smell often indicates a leak in the fuel system, which can compromise your vehicle's fuel efficiency and potentially cause extensive engine damage if left unaddressed. Therefore, it is essential to prioritize this issue and seek a professional mechanic's assistance as soon as possible to ensure both your safety and the longevity of your Jeep Renegade.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.