Wondering if Jeep Wrangler requires premium gas? Most Jeep Wrangler models, including Wrangler Sport, Sahara, and Rubicon trims, do not require premium gasoline. However, there are a few exceptions.
Older Jeep Wrangler models, specifically with a 2.0 L, turbo inline 4-cylinder, or a 3.6L V6 engine, will require premium gas as they’re equipped with engines that need premium gasoline to function.
Read on to know the exact gas type for your Jeep Wrangler model.
Regular Vs Premium Gasoline: Which Is Better For Jeep Wrangler?
Whether regular or premium gasoline works better for Jeep Wrangler depends on its model type and engine specifications.
Using a higher octane premium gasoline than recommended by the manufacturer will not provide any additional benefits and can be a waste of money. Moreover, it won’t provide any better mileage.
On the other hand, using lower octane gasoline that is not suited to your engine specifications will cause engine knocking or pinging, which can damage the engine over time.
In general, most Jeep Wrangler models, such as the Wrangler Sport, Wrangler Willys Sport, Wrangler Sport S, Wrangler Islander, Wrangler Sahara, and Wrangler Unlimited models, are designed to run on regular unleaded gasoline with an octane rating of 87.
However, the newer Jeep Wrangler models, such as the Wrangler Rubicon and Wrangler Rubicon 392, are designed to run on premium unleaded gasoline with an octane rating of 91.
So for the optimum functioning of your Jeep Wrangler model, it’s best to use the fuel most compatible with your model.
Does Jeep Wrangler Require Premium Gas?
As the models mentioned earlier, these models are equipped with standard engines that are designed to run on regular unleaded gasoline with an octane rating of 87 or higher.
This fuel type provides the necessary level of performance for these engines and ensures optimal fuel efficiency.
However, Jeep Wrangler models, such as the 2021 Jeep Wrangler Rubicon 392, or models equipped with a 2.0 L, turbo inline 4-cylinder, or a 3.8L V6 engine, require premium gasoline.
In these models, using regular unleaded gasoline can result in decreased performance and may cause engine damage over time.
| Model | Engine Type | Fuel Type |
| Wrangler Sport | 3.6L V6 | Regular unleaded gasoline with an octane rating of 87 or higher |
| Wrangler Willys Sport | 3.6L V6 | |
| Wrangler Sport S | 3.6L V6 | |
| Wrangler Islander | 3.6L V6 | |
| Wrangler Sahara | 3.6L V6 | |
| Wrangler Rubicon | 3.6L V6 | |
| Wrangler 4xe Plug-In Hybrid | 2.0L 4-cylinder turbocharged engine with two electric motors | Premium gasoline with an octane rating of 91 or higher is recommended and an electric charge |
| Wrangler Unlimited Sport | 3.6L V6 | Regular unleaded gasoline with an octane rating of 87 or higher |
| Wrangler Unlimited Willys | 3.6L V6 | |
| Wrangler Unlimited Sport S | 3.6L V6 | |
| Wrangler Unlimited Sahara | 3.6L V6 | |
| Wrangler Unlimited Rubicon | 3.6L V6 | |
| Wrangler Unlimited 4xe Plug-In Hybrid | 2.0L 4-cylinder turbocharged engine with two electric motors | premium gasoline with an octane rating of 91 or higher is recommended, and an electric charge |
| Wrangler Rubicon 392 | 6.4L V8 | Premium gasoline with an octane rating of 91 or higher |
Can You Put E85 In A Jeep Wrangler?
Whether you can use Flex Fuel or Ethanol-85 (E85) fuel in a Jeep Wrangler depends on the specific model and engine type.
Some Jeep Wrangler models, such as the 3.6L V6 and 2.0L 4-cylinder turbocharged engine used in the current generation, aren’t E85 compatible and are designed to run on regular unleaded gasoline with an octane rating of 87 or higher.
If you use E85 fuel with such incompatible vehicles, it won’t do massive damage immediately, but extended use of E85 flex-fuel can cause long-term damage to the engine.
However, the 3.0L EcoDiesel V6 engine that was available in some 2020 and 2021 Jeep Wrangler models is E85 compatible. This engine is designed to run on either ultra-low sulfur diesel (ULSD) fuel or up to B20 biodiesel blends, as well as E85 fuel.
Related: Cost To Paint A Jeep Wrangler
How Much Does It Cost To Fill Up A Jeep Wrangler Fuel Tank Completely?
The cost to fill up a Jeep Wrangler’s fuel tank completely will depend on the current price of gasoline, the size of the fuel tank, and the model and engine type.
Typically, the cost per liter of fuel is 0.50$. So, if you have a 17 gallon tank, it’ll cost approximately $33 to fill up your whole tank.
Can A Jeep Wrangler Run On Diesel?
Jeep Wranglers are primarily gasoline-powered vehicles, but some recent models have been offered with a diesel engine option. Specifically, the 3.0L EcoDiesel V6 engine is available in some 2020 and 2021 Jeep Wrangler models.
What Is The Fuel Capacity Of A Jeep Wrangler?
Most Jeep Wrangler fuel tank models have a fuel capacity of 17 to 18 gallons or 65 to 70 liters. Some older models, such as the Jeep Wrangler TJ, have smaller fuel tanks and a capacity of around 15.5 gallons (59 liters).
Final Words
In conclusion, the fuel requirements for a Jeep Wrangler depend on the model and engine type.
While some Jeep Wrangler models do require premium gas with an octane rating of 91 or higher, such as those equipped with a 2.0L 4-cylinder turbocharged engine, others are designed to run on regular unleaded gasoline with an octane rating of 87 or higher. Contact a Jeep dealer or an expert to confirm the fuel requirements for your specific Jeep Wrangler model. Using the correct type of fuel helps ensure proper engine performance and avoid potential damage, which prolongs the vehicle’s longevity and efficiency.
Hello, I’m Michael Rosales an expert in cars. As a little boy, I have always loved cars. Over the years I became lucky to have the opportunity to work as a car dealer. It was at this stage I became vast in the knowledge of cars, things you need to know when buying cars and how to minimize cost while still getting your dream car.