21 MPG combined might surprise some SUV shoppers, but for those considering the 2020 Jeep Grand Cherokee 4WD with the 3.6L V6, it’s a compromise many accept. This isn’t a hybrid or a crossover trying to be an off-roader. This is a real Jeep, built with the inherent reliability and capability that loyal buyers want, and that capability costs more at the pump.

City and highway performance

The EPA estimates 18 MPG in the city, a number that reflects the Grand Cherokee’s weight and urban stop-and-go driving. The 3.6L V6 engine, though generally smooth and responsive, needs to work to move this SUV from a standstill. On the highway, owners can expect around 25 MPG, a more reasonable number achievable when the eight-speed automatic transmission settles into higher gears and the engine isn’t constantly accelerating. However, that 25 MPG requires a light foot and avoiding aggressive driving. Pushing the Grand Cherokee hard on the highway will quickly decrease those numbers.

Annual fuel cost

The EPA estimates that owners of the 2020 Jeep Grand Cherokee 4WD 3.6L V6 will spend $2,100 per year on fuel. This is based on driving 15,000 miles per year, using EPA fuel economy estimates, and assuming national average fuel prices. Individual fuel costs will vary based on driving habits, local fuel prices, and the specific mix of city versus highway driving. It’s a good baseline to compare against other vehicles if you drive roughly that much, but any significant change in mileage or driving style will impact this number.

Real-world expectations

While the EPA estimates provide a standardized reference point, real-world fuel economy often differs. Grand Cherokee drivers who frequently engage the four-wheel-drive system, tow trailers, or live in hilly areas will likely see lower fuel economy than the EPA estimates. Similarly, owners who prioritize smooth acceleration and anticipate traffic to avoid hard braking will likely get closer to the EPA’s numbers, possibly even exceeding them on longer highway trips. Tire pressure, vehicle maintenance, and the specific tires installed can also affect fuel consumption.

How it compares

Compared to its competitors, the 2020 Jeep Grand Cherokee 4WD 3.6L is about average for fuel economy. A similarly equipped Toyota 4Runner, another body-on-frame SUV with excellent off-road ability, gets around 17 MPG combined. The Ford Explorer, especially in its four-cylinder EcoBoost configuration, gets significantly better fuel economy with some trims reaching up to 24 MPG combined, but it sacrifices some of the Grand Cherokee’s off-road capability. A Honda Passport offers a more acceptable 22 MPG combined, however that vehicle has a vastly different mission than the Grand Cherokee. The Grand Cherokee buyer accepts the fuel economy compromise for its combination of capability, toughness, and Jeep heritage. See all Jeep fuel economy data. Want to know how it compares to previous years? Compare GRAND MPG across all years.

Tips to maximize efficiency

The 3.6L V6 in the Grand Cherokee doesn’t require premium fuel, so stick to regular unleaded. Using higher octane fuel won’t improve performance or fuel economy, and it’s just a waste of money. Keep your tires properly inflated according to the manufacturer’s recommendations. Underinflated tires increase rolling resistance, which makes the engine work harder and burn more fuel.

Avoid aggressive driving habits like hard acceleration and braking. The Grand Cherokee is a heavy vehicle, and those habits will quickly lower your fuel economy. Accelerate gently and watch traffic to reduce the need for sudden stops.

Avoid using four-wheel drive on paved roads when possible. Unless conditions require it (snow, ice, heavy rain), keep the vehicle in two-wheel drive to reduce drivetrain friction. Constantly engaging 4WD on dry pavement can significantly reduce fuel economy and cause unnecessary wear and tear.

Regular maintenance is important for good fuel economy. Make sure the engine is properly tuned, the air filter is clean, and the spark plugs are in good condition. A well-maintained engine will run more efficiently and use less fuel. Finally, remove unnecessary weight. Taking extra cargo out of the vehicle lightens the load, reducing the energy needed to move the Grand Cherokee.