18 MPG combined will likely give most fuel-conscious buyers pause. But the 2019 Jaguar XJ 5.0L isn’t built for most buyers. This is a flagship sedan designed for executive comfort, effortless power, and timeless British style. Fuel economy, while certainly a consideration, is a supporting factor in the overall ownership experience. Someone who prioritizes sharp driving dynamics paired with a comfortable interior and sonorous V8 engine won’t mind frequent trips to the gas station.

City and highway performance

The EPA estimates the 2019 Jaguar XJ 5.0L at 15 MPG in the city and 23 MPG on the highway. The city rating reflects the demands of stop-and-go traffic where the XJ’s substantial weight and powerful engine work against it. The highway figure is more respectable; the XJ’s smooth eight-speed automatic transmission and aerodynamic profile performs well on long cruises, allowing for relatively relaxed and efficient travel at highway speeds. Those figures also reflect a certain reality, considering that the XJ offers a supercharged V8 with 470 horsepower.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2019 Jaguar XJ 5.0L at $3,200. This estimate is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. It also assumes national average fuel prices, which will fluctuate and influence the real cost for each owner. This is simply an estimate, driving habits and local fuel prices play a significant role in the actual amount you’ll spend on gasoline.

Real-world expectations

While the EPA figures provide a baseline, real-world fuel economy for the 2019 Jaguar XJ 5.0L often varies. Aggressive driving, frequent short trips, and prolonged idling will all negatively impact fuel consumption. Gentle acceleration, consistent highway speeds, and proactive maintenance can nudge the numbers closer to, or even slightly above, the EPA estimates. Most owners report figures ranging from 14-17 MPG in mixed driving, depending on their location and driving habits. Visit XJ MPG across all years for user-submitted data.

How it compares

Compared to its competitors, the 2019 Jaguar XJ 5.0L lands somewhere in the middle of the pack. The BMW 750i xDrive, with its 4.4-liter V8, achieves a similar 17 MPG combined. The Mercedes-Benz S560, while also packing a V8, manages a slightly better 19 MPG combined. The Lexus LS 500, powered by a twin-turbo V6, boasts a superior 22 MPG combined. The Audi A8, with its turbocharged V6, is in similar territory at 22 MPG combined as well. For drivers who are willing to sacrifice power for less gas, these are better cars. But those willing to trade higher MPG for the XJ’s unique charm aren’t likely to be phased by its economy compared to the more common Germans and the Lexus.

Tips to maximize efficiency

Given the XJ 5.0L’s powerful engine, smooth acceleration and mindful driving techniques are essential to maximizing fuel efficiency. Avoid sudden bursts of speed and try to maintain a steady pace, especially on the highway.

Regular maintenance is important. Ensure your tires are properly inflated, as underinflated tires increase rolling resistance and reduce MPG. Schedule routine maintenance, including oil changes and air filter replacements, according to the manufacturer’s recommendations.

Limit idling. The XJ’s large engine consumes a significant amount of fuel while idling. If you anticipate being stopped for more than a minute or two, turn off the engine.

Reduce excess weight. Remove unnecessary items from the trunk and interior, as added weight directly impacts fuel consumption. By managing weight, you can improve XJ fuel efficiency.

Use cruise control on long highway drives. Cruise control helps maintain a constant speed, which translates to more consistent and efficient fuel consumption. View all Jaguar fuel economy data to see how this model compares to other Jaguar sedans and SUVs.