20 MPG combined is the estimated fuel economy of the 2016 Jaguar XJL AWD with the 3.0L supercharged V6. This car isn’t targeted at the fiercely economical buyer. Instead, it’s for those who desire the long-wheelbase XJL’s distinctive blend of British luxury, strong engine, and all-weather traction, accepting the fuel cost as part of ownership. The XJL is a statement car, and its buyers prioritize comfort, style, and performance over maximizing every last mile per gallon.

City and highway performance

The EPA estimates for the 2016 XJL AWD 3.0L are 17 MPG in the city and 25 MPG on the highway. The city figure is where most owners will see the biggest impact, as the XJL’s weight and the supercharged V6 use more fuel during stop-and-go driving. The highway number is respectable, reflecting the engine’s ability to cruise efficiently once up to speed, using the smooth eight-speed automatic transmission. Even on the open road, a heavy foot will quickly diminish any attempts at saving gas, reminding you of the supercharger waiting to be used.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2016 Jaguar XJL AWD 3.0L is $2,900. This is based on driving 15,000 miles per year and using the EPA’s projected national average fuel prices at the time of testing. This is just an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Expect to spend considerably more than this if your commute involves heavy traffic or you frequently use the XJL’s performance capabilities.

Real-world expectations

The EPA figures provide a useful benchmark, but real-world fuel economy often differs. Factors like driving style, road conditions, and even tire pressure can significantly impact the miles you get from each gallon. Owners who prioritize efficient driving and spend a significant portion of their time on the highway may see figures closer to the EPA estimates. Those who frequently drive aggressively or in congested areas should anticipate results closer to the city rating, or even lower. Online forums and owner reviews specific to the 2016 XJL can provide further insights into typical fuel consumption experiences.

How it compares

Compared to its competitors, the 2016 Jaguar XJL AWD 3.0L’s fuel economy is in the middle. For example, the all-wheel-drive BMW 740i xDrive of the same year achieves a similar 20 MPG combined, but offers slightly better highway fuel economy. A comparable Audi A8 with all-wheel drive also manages around 21 MPG combined, showing a slight edge. Upgrading to a V8 in any of the competitors will drastically reduce their fuel economy. Considering XJL MPG across all years is crucial, as improvements were made in later model years. For those prioritizing fuel efficiency within the Jaguar family, exploring all Jaguar fuel economy data may be worthwhile.

Tips to maximize efficiency

Given the XJL’s supercharged engine and all-wheel-drive system, smooth and consistent acceleration is important. Avoid aggressive launches and unnecessary hard braking, allowing the transmission to shift efficiently. Gentle throttle inputs will reduce the demand on the supercharger, saving fuel. The XJL is a large, heavy car, so anticipate stops well in advance.

Tire pressure plays a significant role in fuel economy. Ensure your tires are inflated to the recommended pressure, found on the driver’s side doorjamb. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. Regularly checking and maintaining proper inflation is a cheap and easy way to improve your gas mileage.

Minimize the use of accessories that place a heavy load on the engine. The air conditioning system, particularly on hot days, can significantly impact fuel economy. Heated seats or the rear defroster also draw power and can contribute to lower MPG. Only use these features when needed.

Consider the driving mode selector, if equipped. Many modern vehicles offer different driving modes to optimize performance or fuel economy. Selecting an “Eco” or “Comfort” mode will often remap the throttle response and shift points, encouraging more efficient driving habits. While it may slightly reduce performance, it can make a noticeable difference in fuel consumption, especially during city driving.