20 MPG combined won’t win any fuel-sipping awards, but it’s the reality for the 2018 Jeep New Wrangler Unlimited 4WD 3.6L 6-cyl. No one buys this Wrangler expecting Prius-like efficiency. This is a vehicle engineered for reliable off-road capability, open-air freedom, and a distinctive style that resonates with a specific type of driver: the adventurer, the weekender, the individualist who prioritizes capability and character over pure economy. They accept its thirst in exchange for what it uniquely offers.

City and highway performance

The EPA estimates of 18 MPG in the city and 23 MPG on the highway reflect the Wrangler’s inherent compromises. Its boxy shape and upright windshield are aerodynamic brick walls, especially compared to modern crossovers and SUVs. The solid axles with their added weight and rolling resistance also contribute to the lower mileage figures. While the 3.6L V6 provides ample power for both on and off-road situations, its naturally aspirated design requires more fuel to achieve that performance, particularly when battling the Wrangler’s substantial curb weight. The automatic 8-speed transmission does its best to keep the engine running efficiently, but ultimately, the Wrangler’s design limits its efficiency potential.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Jeep New Wrangler Unlimited 4WD 3.6L 6-cyl at $2,200. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that your actual fuel costs may vary based on your driving habits, local fuel prices, and the type of driving you do. If you spend a lot of time off-road or in stop-and-go traffic, expect that number to be higher. Using premium fuel will also increase your spending at the pump. For more insight, review all Jeep fuel economy data to put this figure into context across the brand.

Real-world expectations

While the EPA figures provide a baseline, real-world fuel economy for the 2018 Wrangler Unlimited can vary significantly. Aggressive driving, larger aftermarket tires, added accessories, and off-road excursions will all negatively impact fuel mileage. Owners frequently report figures slightly below the EPA estimates, especially if they live in hilly areas or regularly engage in demanding driving.

Conversely, drivers who prioritize smooth acceleration and consistent highway speeds might meet or even slightly exceed the EPA’s highway rating. Consider these EPA figures as a starting point, adjust based on your own driving style and intended use.

How it compares

Compared to other off-road-oriented SUVs, the 2018 Wrangler Unlimited’s fuel economy is generally in line with its competitors, although some offer slightly better figures. For example, the Toyota 4Runner, another body-on-frame SUV with off-road chops, achieves a similar 17 MPG city and 21 MPG highway. The Wrangler’s direct competitor, the Land Rover Discovery, achieves an EPA-estimated 16 MPG city and 21 MPG highway. Buyers cross-shopping these vehicles understand that off-road capability and practicality often come at the expense of fuel efficiency.

For consumers looking for more efficient SUVs, the Honda CR-V offers up to 28 MPG city and 34 MPG highway, but that vehicle focuses primarily on on-road comfort and all-weather capability rather than serious off-road adventures. The Wrangler’s appeal lies in its unique combination of features, and buyers are generally willing to accept the fuel economy trade-off. Check the NEW MPG across all years to consider other model years, which may have slight variations in their ratings.

Tips to maximize efficiency

Consider your tire pressure. Ensuring that your tires are properly inflated to the recommended pressure reduces rolling resistance and can improve fuel economy. Check your tire pressure regularly, especially before long trips, after significant temperature changes. Tire pressure can drop over time so it’s best to check once per week or before a long journey.

Avoid unnecessary weight. The heavier your Wrangler, the lower its gas mileage will be. Remove any unnecessary cargo from the vehicle, especially heavy items that you don’t need on a daily basis. While extra equipment is appealing, remember that every pound counts against your fuel economy.

Practice smooth acceleration and braking. Avoid rapid acceleration and hard braking, as these habits consume more fuel. Anticipate traffic flow and maintain a steady speed whenever possible. Gradual starts and stops are much more efficient so develop a feather-light foot.

Drive at moderate speeds on the highway. Aerodynamic drag increases exponentially with speed, so driving at lower speeds on the highway can significantly improve fuel economy. Consider reducing your speed by a few miles per hour on long trips to conserve gas. Driving at 55 MPH instead of 75 MPH can boost your MPG on every journey.

Consider your driving mode. If you aren’t in a situation that requires four-wheel drive, drive in two-wheel drive. Engaging four-wheel drive puts more strain on the vehicle and reduces fuel economy. Only use four-wheel drive when necessary for off-road conditions or inclement weather.