22 MPG combined from a 2016 Porsche Cayenne S e-Hybrid isn’t going to win any hypermiling competitions, but it’s a figure that existing Cayenne owners, and those aspiring to join their ranks, likely understand. This is a performance SUV with a complex hybrid powertrain, not a dedicated fuel sipper. The Cayenne S e-Hybrid is bought for its blend of Porsche driving dynamics and the slight decrease in gas use afforded by its plug-in capabilities.

City and highway performance

The EPA estimates the 2016 Cayenne S e-Hybrid at 21 MPG in the city and 24 MPG on the highway. The urban figure reflects the benefits of the electric motor assisting the 3.0L supercharged V6 during stop-and-go driving. The highway number, while a modest improvement, suggests that the gasoline engine does most of the work at higher speeds. These figures are achievable, but dependent on driving style. A heavy right foot will quickly deplete the battery and reduce overall fuel economy.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2016 Porsche Cayenne S e-Hybrid is $2,650. This calculation is based on driving 15,000 miles per year and using the national average fuel price at the time of the estimate. This assumes a roughly even split between city and highway driving, reflecting the combined MPG rating. Owners who primarily drive in the city and use the electric motor frequently might see a lower annual fuel cost, while those who primarily rack up highway miles could see a higher one.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy for the Cayenne S e-Hybrid varies. Factors like driving habits, traffic conditions, and terrain influence the actual MPG. Those diligently plugging in regularly and maximizing electric-only driving can substantially improve their fuel consumption, potentially exceeding the EPA estimates for city driving. However, neglecting to charge the battery and relying solely on the gasoline engine will result in fuel economy figures closer to that of a V6-powered Cayenne without hybrid assistance.

How it compares

The 2016 Cayenne S e-Hybrid’s fuel economy isn’t class-leading, but it holds its own against competitors. A similarly equipped BMW X5 xDrive40e, for example, achieves around 24 MPG combined, only slightly better. The Mercedes-Benz GLE550e, another plug-in hybrid SUV from that era, posts an EPA rating close to the Cayenne. Even non-hybrid competitors like the Audi SQ5, with its supercharged V6, can struggle to match the Cayenne’s combined MPG in real-world driving. Understanding these comparisons is important for buyers weighing performance, luxury, and efficiency.

Tips to maximize efficiency

Maximize your use of the electric motor. The Cayenne S e-Hybrid’s ability to run on electric power alone is its biggest fuel-saving asset. Short trips and city driving are ideal scenarios for EV mode. Depleting the battery quickly reduces the vehicle to acting as a standard hybrid.

Anticipate traffic flow to minimize braking. Regenerative braking captures energy that would otherwise be lost during deceleration, helping to recharge the battery and improve efficiency. Smooth acceleration and anticipating stops will maximize the effectiveness of this system.

Pay attention to tire pressure. Properly inflated tires reduce rolling resistance, leading to better fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the driver’s side doorjamb or in the owner’s manual.

Avoid aggressive driving. The Cayenne S e-Hybrid is a performance SUV, but aggressive acceleration and hard braking significantly reduce fuel efficiency. Drive smoothly and predictably to conserve fuel and extend the range of the electric motor.

Consider mapping out charging opportunities along your regular routes. See if there are changes in fuel efficiency if you CAYENNE MPG across all years. Knowing where charging stations are located and making it easy to keep the battery charged will encourage more electric-only driving, ultimately saving fuel and money. You can find all Porsche fuel economy data on our site.