If you’ve ever wondered what kind of gas to put in your Jeep Wrangler, you’ve come to the right place. Understanding what fuel is best can be confusing, especially with so many engine types and years. The short answer: Most Jeep Wranglers use 87-Octane regular unleaded gasoline, but there are some exceptions we’ll dig into for specific models and years. ⛽
For example, if you own a 2020 or newer Wrangler with the 3.0L diesel engine, you’ll need No. 2 Ultra Low Sulfur diesel fuel. 🛠️ And for those driving a Wrangler 4xe, that’s a plug-in hybrid, you’ll need regular unleaded gasoline paired with electric power. These different types of fuel can affect the performance and sustainability of your ride—so it’s worth paying attention! 🚗
We’ll answer common questions like “Can I use premium gas?” and give you other tips to keep your Jeep running smoothly. From the old 1987 YJ to the latest models, we’ve got you covered. Get ready to fuel up with the right information! 🏁
JUMP TO TOPIC
What Gas Does Jeep Wrangler Take?
Wondering what fuel to put in your Jeep Wrangler? Don’t worry, we’ve got you covered.
For models 1996 onwards, most engines take regular gasoline with an octane rating of 87. This includes the popular 2.0L, 2.4L, 3.6L, 3.8L, and 4.0L engines. The Jeep Wrangler 4xe is a plug-in hybrid, which means it uses both 87 octane unleaded gasoline and electricity. 🛠️
Models from 2020 onwards offer a 3.0L diesel engine, which requires No. 2 Ultra Low Sulfur diesel fuel.
Gas Tank Sizes by Model:
- YJ (1987–1995): 15 gallons (56.8 liters)
- TJ (1997–2006): 19 gallons (71.9 liters)
- JK (2007–2018):
- 2-door: 18.6 gallons (70.4 liters)
- 4-door: 22.5 gallons (85.2 liters)
- JL (2018–Present):
- 2-door: 17.5 gallons (66.2 liters)
- 4-door: 21.5 gallons (81.4 liters)
| Model Year | Fuel Type | Gas Tank Size |
| YJ (1987-1995) | Regular Gasoline | 15 gallons |
| TJ (1997-2006) | Regular Gasoline | 19 gallons |
| JK (2007-2018) | Regular Gasoline | 2-door: 18.6 gallons, 4-door: 22.5 gallons |
| JL (2018-Present) | Regular Gasoline | 2-door: 17.5 gallons, 4-door: 21.5 gallons |
| 4xe (2020-Present) | 87 Octane Unleaded Gasoline & Electricity | 21.5 gallons |
Quick tip: Always double-check the fuel type on the inside of your gas cap. 🚐🛢️
Types Of Fuel Suitable For Jeep Wrangler
The Jeep Wrangler’s engine is versatile. It can run on different fuel types, each with benefits. Choosing the right fuel keeps your Jeep running smoothly.
Unleaded Gasoline
Using regular unleaded gasoline, 87-octane, is typically recommended. It’s the most common fuel type for our Jeep Wranglers.
For older generations like the 1987-1995 YJ models, 2.5L 4-cylinder engines, and others, 87-octane gas is suitable. This fuel type is easily accessible and economical, making it a practical choice for daily driving.
Keep in mind that using higher octane fuel where not required can waste money without providing any real benefits. Wranglers are designed to perform well on this everyday fuel.
Premium Gasoline
Some models recommend premium unleaded gasoline. This fuel has a higher octane rating, usually around 91 octane. It’s often suggested for newer models or specific engine types to enhance performance.
While premium gasoline can offer slightly better performance and fuel efficiency, it’s usually overkill for most Wrangler engines.
For the performance enthusiasts out there, spending a bit on premium gas might give a better driving experience, but it’s not a necessity unless specified in your Jeep Wrangler’s manual.
Ethanol-Blended Fuels
Ethanol-blended fuels, like E85, are another option, mainly for Wrangler models that are flex-fuel capable. If your gas cap is labeled “FFV”, it means you can use E85, which contains up to 85% ethanol.
Ethanol blends like E85 burn cleaner but offer less mileage compared to regular gasoline. Despite potentially lower costs, the overall fuel efficiency might drop.
Choosing ethanol-blended fuels, particularly E85, can help reduce carbon footprints and support renewable energy sources. It’s good for the environment, but remember, frequent fill-ups may be needed.
Always check your Jeep Wrangler’s manual for specific fuel recommendations to avoid engine issues.
Factors Influencing Fuel Choice
When selecting fuel for our Jeep Wrangler, we must consider various factors like engine type, performance needs, and fuel efficiency. Each of these aspects plays a crucial role in determining the best fuel for our ride.
Engine Type
The type of engine in our Jeep Wrangler greatly influences the fuel needed. Different engines have different requirements:
| Engine Type | Recommended Fuel |
| 2.0L Turbocharged | Premium unleaded, 91 octane |
| 3.6L V6 | Regular unleaded, 87 octane |
| 4.0L I6 | Regular unleaded, 87 octane |
Premium fuel is often required for engines like the 2.0L turbocharged, while the 3.6L V6 and 4.0L I6 usually operate efficiently on regular unleaded. Using the wrong fuel can lead to engine knocking, which can cause damage over time.🛠️
Performance Requirements
Performance needs vary based on how we use our Jeep. If we are into off-roading, our engine might need higher-octane fuel to provide the extra torque and power.
Higher-performance engines may become more efficient with premium gas, offering better acceleration and reducing the risk of knocking. For those who prioritize smooth rides and reliability, sticking to the manufacturer’s recommendations is key to maintaining our Wrangler’s optimal performance.🚗
Fuel Efficiency
Fuel efficiency is always a critical factor. Regular unleaded gas is usually the most cost-effective and offers reasonable gas mileage in most Jeep Wranglers. For those with the 4xe plug-in hybrid, blending gas with electric power significantly boosts efficiency and lowers emissions.💡
Choosing fuel that aligns with our Jeep’s specific needs ensures we get the best fuel economy, saving money in the long run. Regularly using the appropriate fuel also helps in maintaining the engine’s health, enhancing reliability and reducing maintenance costs. ⛽
We love what we do, and it shows in everything we do and more. We share our knowledge, here on Ran When Parked.
- Best Exhaust Tip for Deep Sound: Top Picks for 2025 - May 3, 2025
- Best Clear Coat for Headlights Reviewed: Top Picks for Enhanced Visibility - May 3, 2025
- Best Car Coffee Table Books for Auto Enthusiasts - May 3, 2025