MPG Buddy Fuel economy and gas mileage for every car, 1984 to today

2020 Porsche Panamera 4S Executive: MPG and fuel economy

The 2020 Porsche Panamera 4S Executive is rated by the U.S. Environmental Protection Agency at 21 combined MPG, with 18 MPG in the city and 26 MPG on the highway. That lands well below the average for cars in the Large Cars class in the same model year.

This page collects every fuel-economy figure the EPA publishes for the 2020 Porsche Panamera 4S Executive. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.

Key takeaways

  • Returns 30% worse combined MPG than the average car in the Large Cars class for the 2020 model year (29.8 MPG class average).
  • The most efficient car in the Large Cars class for the 2020 model year is the Tesla Model S Long Range Plus at 117 MPG.
  • EPA estimates this car costs around $5,750 more in fuel over five years than an average new vehicle of the same model year.
  • Requires premium gasoline, which typically adds about 40 to 60 cents per gallon to the EPA's annual fuel cost estimate.

Fuel economy at a glance

These are the EPA's official ratings for the 2020 Porsche Panamera 4S Executive. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.

Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).

Combined MPG 21 MPG
City MPG 18 MPG
Highway MPG 26 MPG
Annual fuel cost $3,300
Tailpipe CO₂ 419 g/mi
Fuel type Premium

How the 2020 Porsche Panamera 4S Executive compares

The 2020 Porsche Panamera 4S Executive returns 21 combined MPG. Cars in the Large Cars class for the same model year average 29.8 MPG, which puts this car behind the class average by about 30%.

The most efficient car in the Large Cars class for the 2020 model year is the Tesla Model S Long Range Plus at 117 MPG. The bar chart below puts the Porsche Panamera 4S Executive alongside the class best and the class average so you can see the full picture.

For broader context, the average new car of the 2020 model year (across all classes) returns 27.2 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2020 model year is on its own page.

2020 Porsche Panamera 4S Executive
21 MPG
Class average, 2020
29.8 MPG
Class best, 2020
117 MPG
Average new car, 2020
27.2 MPG

Annual fuel cost across driving patterns

The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.

The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 714.3 gallons (the car's annual consumption at the rated MPG).

Driving pattern Estimated annual fuel cost
Light driver, 7,500 miles per year $1,650
Average driver, 15,000 miles per year $3,300
Heavy driver, 25,000 miles per year $5,500

Year-over-year MPG for the Porsche Panamera 4S Executive

The EPA has rated the Porsche Panamera 4S Executive across 10 model years, from 2014 Porsche Panamera 4S Executive through 2023 Porsche Panamera 4S Executive. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.

Combined MPG has stayed in roughly the same range across the run. The peak rating came with the 2017 Porsche Panamera 4S Executive at 23 MPG.

Year Combined MPG Open year page
2023 19 MPG 2023 Porsche Panamera 4S Executive
2022 19 MPG 2022 Porsche Panamera 4S Executive
2021 19 MPG 2021 Porsche Panamera 4S Executive
2020 21 MPG this page
2019 21 MPG 2019 Porsche Panamera 4S Executive
2018 23 MPG 2018 Porsche Panamera 4S Executive
2017 23 MPG 2017 Porsche Panamera 4S Executive
2016 20 MPG 2016 Porsche Panamera 4S Executive
2015 20 MPG 2015 Porsche Panamera 4S Executive
2014 20 MPG 2014 Porsche Panamera 4S Executive

Compare against other Large Cars for 2020

If you are cross-shopping the 2020 Porsche Panamera 4S Executive, the most useful comparison is against the other cars in the Large Cars class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.

The Tesla Model S Long Range Plus leads this group at 117 MPG, 96 MPG ahead of the 2020 Porsche Panamera 4S Executive.

2020 Tesla Model S Long Range Plus
117 MPG 2020 Tesla Model S Long Range
111 MPG 2020 Tesla Model S Standard Range
109 MPG 2020 Tesla Model S Performance (19in Wheels)
104 MPG 2020 Tesla Model S Performance (21in Wheels)
97 MPG 2020 Porsche Taycan 4S Perf Battery Plus
69 MPG
2020 Porsche Panamera 4S Executive
21 MPG

Specifications

The 2020 Porsche Panamera 4S Executive runs a 2.9-liter 6-cylinder turbocharged engine paired with a automatic (am-s8), sending power through 4-wheel drive.

Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.

Vehicle class
Large Cars
Engine
2.9L 6-cylinder turbocharged
Transmission
Automatic (AM-S8)
Drivetrain
4-Wheel Drive
Fuel type
Premium
Annual petroleum use
14.2 barrels per year
Start-stop system
Yes

Common questions about the 2020 Porsche Panamera 4S Executive

Quick answers to the questions people most often search for when looking up the 2020 Porsche Panamera 4S Executive.

  • Is the 2020 Porsche Panamera 4S Executive fuel efficient?
    Not particularly. The 2020 Porsche Panamera 4S Executive returns 21 combined MPG, which trails the average car in the Large Cars class for the same model year by about 30%.
  • What MPG does the 2020 Porsche Panamera 4S Executive get?
    The EPA rates the 2020 Porsche Panamera 4S Executive at 21 combined MPG, 18 MPG in city driving, and 26 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is.
  • How much does it cost to fuel a 2020 Porsche Panamera 4S Executive per year?
    The EPA estimates an annual fuel cost of $3,300 for the 2020 Porsche Panamera 4S Executive. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade.
  • Does the 2020 Porsche Panamera 4S Executive require premium gas?
    Yes. The EPA lists the 2020 Porsche Panamera 4S Executive as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump.
  • Has the Porsche Panamera 4S Executive become more fuel efficient over time?
    Combined MPG has stayed close to flat across the run. Both the earliest (2014 Porsche Panamera 4S Executive, 20 MPG) and most recent (2023 Porsche Panamera 4S Executive, 19 MPG) versions sit in the same range.
  • How much CO₂ does the 2020 Porsche Panamera 4S Executive emit?
    Tailpipe CO₂ emissions are 419 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 6,285 kilograms of CO₂.
  • What is the difference between the city and highway MPG of the 2020 Porsche Panamera 4S Executive?
    City driving returns 18 MPG and highway driving returns 26 MPG, a gap of 8 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise.
  • What engine is in the 2020 Porsche Panamera 4S Executive?
    The 2020 Porsche Panamera 4S Executive has a 2.9-liter 6-cylinder turbocharged engine (EPA description: SIDI).
  • What transmission and drivetrain does the 2020 Porsche Panamera 4S Executive have?
    The 2020 Porsche Panamera 4S Executive comes with a automatic (am-s8) transmission and 4-wheel drive.
  • How does the 2020 Porsche Panamera 4S Executive compare to the best car in its class?
    The most efficient car in the Large Cars class for the 2020 model year is the Tesla Model S Long Range Plus at 117 combined MPG. The Porsche Panamera 4S Executive returns 21 MPG, a gap of 96 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.

Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.