25 MPG combined might make some cringe in the age of hybrids and EVs, but for the 2022 Jeep Wrangler 4dr EcoDiesel, it’s practically a selling point. This is a body-on-frame off-roader with solid axles and the aerodynamics of a brick. This isn’t a vehicle purchased for hypermiling; it’s bought by enthusiasts who prioritize capability and a unique driving experience above all else. The surprisingly decent mileage from the EcoDiesel engine is welcome icing on the cake.

City and highway performance

The EPA estimates for the Wrangler EcoDiesel are 22 MPG in the city and 29 MPG on the highway. The city figure reflects the stop-and-go driving where the Wrangler’s weight and less-than-slippery shape take their toll. However, the highway number is impressive. The 3.0L diesel’s torque allows the eight-speed automatic transmission to settle into a low-RPM cruise, sipping fuel efficiently. Any modifications like larger tires or a roof rack will negatively affect these numbers, especially on the highway.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Jeep Wrangler 4dr EcoDiesel at $2,250. This calculation is based on driving 15,000 miles per year and assumes that the fuel price is the national average for diesel. Your actual cost will vary based on how much you drive and the local price of diesel in your area. $2,250 is a useful benchmark for budgeting and comparing the Wrangler EcoDiesel to other vehicles, especially considering that diesel fuel is often (though not always) more expensive than gasoline.

Real-world expectations

Official EPA numbers provide a good baseline, but every driver’s experience will vary. Wranglers are highly customizable, and lifting, adding weight with aftermarket bumpers and winches, and running larger, off-road-oriented tires will all significantly impact MPG. A more aggressive driving style will also greatly reduce fuel economy. However, if you resist adding too much weight and adopt a conservative driving style, particularly on the highway, it’s possible to exceed the EPA’s 29 MPG estimate. Wrangler owners report averaging around 23-27 MPG in mixed driving.

How it compares

Compared to its gasoline-powered siblings, the EcoDiesel offers a noticeable advantage in fuel economy and pulling power. The 2.0L turbocharged four-cylinder Wrangler is rated for 22 MPG combined, and the 3.6L V6 manages 20 MPG. While the difference might seem small on paper, the EcoDiesel’s superior torque makes it feel more relaxed and efficient, especially when towing. For context, a Toyota 4Runner, a popular alternative, is rated at just 17 MPG city and 21 MPG highway. You can also compare this to all Jeep fuel economy data or drill down specifically for WRANGLER MPG across all years.

Tips to maximize efficiency

Tire pressure is critical. Ensure your tires are inflated to the manufacturer’s recommended pressure, which you can find on the doorjamb sticker. Underinflated tires cause increased rolling resistance, which can noticeably reduce fuel economy, especially on a heavy vehicle like the Wrangler.

Minimize aerodynamic drag. While the Wrangler will never be slippery, removing unnecessary items like roof racks when not in use can help. Also, avoid driving at excessively high speeds on the highway, as wind resistance increases exponentially with speed.

Drive conservatively. Hard acceleration and braking waste fuel. The EcoDiesel’s abundance of torque means you don’t need to press the accelerator hard to get up to speed. Anticipate traffic flow and maintain a steady pace whenever possible.

Take advantage of the eight-speed automatic transmission. In higher gears, the engine runs at lower RPMs, which saves fuel. Avoid manually downshifting unless necessary. Let the automatic transmission do its job efficiently.

Service your vehicle regularly. Scheduled maintenance, including oil changes and air filter replacements, ensures your EcoDiesel engine runs at its peak efficiency. A well-maintained engine burns fuel more cleanly and efficiently.