23 MPG combined won’t win any hypermiling contests, but for the 2019 Porsche Panamera 4 e-Hybrid Executive, it represents a complex compromise. This isn’t a car designed for maximum fuel sipping; it’s a luxury grand tourer with a plug-in hybrid powertrain crammed into a stretched wheelbase, prioritizing performance and rear-seat room over outright efficiency. This Panamera is for the executive who craves both blistering acceleration and the ability to glide quietly through their gated community on electric power, however briefly.

City and highway performance

The EPA numbers describe blended driving, and also highlight the limitations of a plug-in hybrid in a car this size. The 21 MPG city figure reflects the benefit of the electric motor assisting the 2.9L twin-turbo V6 in stop-and-go traffic. The electric motor provides instant torque, reducing the need for the gasoline engine to work as hard, which saves fuel. The 24 MPG highway number suggests decent long-distance cruising efficiency, but this is where the Panamera’s weight and aerodynamic profile begin to factor more significantly. Once the electric range is depleted, the V6 shoulders the entire load, and the numbers reflect the physics involved in moving a large, luxurious vehicle at speed.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Porsche Panamera 4 e-Hybrid Executive at exactly $2,500. This figure is based on driving 15,000 miles per year, with a certain percentage of those miles driven in the city and the rest on the highway. The calculation also assumes the cost of gasoline will be based on national average fuel prices at the time of calculation. Individual fuel costs will vary significantly depending on driving habits, local fuel prices, and the amount of electric-only driving the owner typically does. Someone who religiously plugs in the car and drives short distances will see a dramatically lower fuel bill.

Real-world expectations

The EPA estimates should be viewed as a reasonable baseline, but real-world fuel economy will vary considerably based on your driving style and charging habits. Owners who frequently drive long distances without plugging in can expect to see numbers closer to a conventionally powered Panamera. Aggressive acceleration and high-speed cruising will also decrease the MPG. However, those who consistently plug in the car and use the electric motor for shorter commutes and errands can significantly surpass the EPA estimates, potentially reducing their fuel consumption by a considerable margin. This requires discipline and a commitment to maximizing the benefits of the plug-in hybrid system.

How it compares

Compared to its competitors, the Panamera 4 e-Hybrid Executive occupies an interesting middle ground. The Mercedes-Benz S560e (when it was available) offered similar levels of luxury and performance with a plug-in hybrid system, but its fuel economy numbers were comparable and sometimes even lower. The BMW 745e, another plug-in hybrid contender, prioritized electric range but didn’t quite match the Porsche’s sporty driving dynamics. The standard, non-hybrid Panamera models with the V6 offer similar highway fuel economy, but lack the electric assist for city driving, leading to lower overall MPG. Those prioritizing ultimate fuel efficiency might consider a Tesla Model S, but that vehicle trades Porsche’s bespoke luxury and driving experience for electric-only range. For those interested in all Porsche fuel economy data, comparison shopping across the lineup is a valuable exercise. Drivers should also review PANAMERA MPG across all years for additional perspective.

Tips to maximize efficiency

Preconditioning the cabin while the car is plugged in can significantly reduce energy consumption. Warming or cooling the interior using grid power, rather than the car’s battery, preserves electric range for driving. Remember to use the Porsche Connect app to schedule charging to off-peak hours to save money on electricity.

Gentle acceleration and braking are key to maximizing efficiency in any vehicle, but particularly in a hybrid. Avoid aggressive throttle inputs, which force the gasoline engine to kick in. Anticipate traffic flow and brake smoothly to allow the regenerative braking system to recapture energy and recharge the battery.

Select the appropriate driving mode for the situation. The Panamera offers various modes, including E-Power (electric only), Hybrid Auto (which blends gasoline and electric power), and E-Hold (which preserves the battery’s charge for later use). Use E-Power in city driving and Hybrid Auto on the highway for the best results.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the doorjamb of the car.

Minimize unnecessary weight in the vehicle. Every extra pound reduces fuel economy, especially during acceleration and hill climbs. Remove any items you don’t need to carry regularly to lighten the load and improve efficiency.