
The following table compares the fuel economies of different models of Porsche 718 cars, across model years.
The annual fuel costs (shown in the right-hand columns) are calculated based on an estimated annual mileage of 15,000 miles,
of which 55% of the miles are city driving, and 45% of the miles are highway driving.
Annual Cost 1 assumes a fuel cost of $5.00 per gallon, while Annual Cost 2 assumes a fuel cost of $6.00 per gallon.
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Cayman GT4 | Manual 6-speed | 6 | 19 | 17 | 23 | $3,893 | $4,672 |
| 2023 718 Cayman GT4 | Automatic (AM-S7) | 6 | 20 | 18 | 24 | $3,697 | $4,437 |
| 2022 718 Cayman GT4 | Manual 6-speed | 6 | 19 | 17 | 23 | $3,893 | $4,672 |
| 2022 718 Cayman GT4 | Automatic (AM-S7) | 6 | 20 | 18 | 24 | $3,697 | $4,437 |
| 2020 718 Cayman GT4 | Manual 6-speed | 6 | 19 | 16 | 23 | $4,045 | $4,854 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2021 718 Cayman GT | Manual 6-speed | 6 | 19 | 17 | 23 | $3,893 | $4,672 |
| 2021 718 Cayman GT | Automatic (AM-S7) | 6 | 20 | 18 | 24 | $3,697 | $4,437 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 GT4 RS | Automatic (AM-S7) | 6 | 16 | 15 | 19 | $4,526 | $5,431 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Cayman T | Manual 6-speed | 4 | 22 | 20 | 26 | $3,360 | $4,032 |
| 2023 718 Cayman T | Automatic (AM-S7) | 4 | 23 | 21 | 27 | $3,214 | $3,857 |
| 2022 718 Cayman T | Manual 6-speed | 4 | 22 | 20 | 26 | $3,360 | $4,032 |
| 2022 718 Cayman T | Automatic (AM-S7) | 4 | 23 | 21 | 27 | $3,214 | $3,857 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Cayman GTS | Manual 6-speed | 6 | 19 | 17 | 24 | $3,832 | $4,599 |
| 2023 718 Cayman GTS | Automatic (AM-S7) | 6 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2022 718 Cayman GTS | Manual 6-speed | 6 | 19 | 17 | 24 | $3,832 | $4,599 |
| 2022 718 Cayman GTS | Automatic (AM-S7) | 6 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2021 718 Cayman GTS | Manual 6-speed | 6 | 19 | 17 | 24 | $3,832 | $4,599 |
| 2021 718 Cayman GTS | Automatic (AM-S7) | 6 | 21 | 19 | 24 | $3,577 | $4,292 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Boxster T | Manual 6-speed | 4 | 22 | 20 | 26 | $3,360 | $4,032 |
| 2023 718 Boxster T | Automatic (AM-S7) | 4 | 23 | 21 | 27 | $3,214 | $3,857 |
| 2022 718 Boxster T | Manual 6-speed | 4 | 22 | 20 | 26 | $3,360 | $4,032 |
| 2022 718 Boxster T | Automatic (AM-S7) | 4 | 23 | 21 | 27 | $3,214 | $3,857 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Cayman | Automatic (AM-S7) | 4 | 24 | 21 | 27 | $3,214 | $3,857 |
| 2023 718 Cayman | Manual 6-speed | 4 | 22 | 20 | 25 | $3,412 | $4,095 |
| 2022 718 Cayman | Manual 6-speed | 4 | 22 | 20 | 26 | $3,360 | $4,032 |
| 2022 718 Cayman | Automatic (AM-S7) | 4 | 24 | 21 | 27 | $3,214 | $3,857 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Spyder | Manual 6-speed | 6 | 19 | 17 | 23 | $3,893 | $4,672 |
| 2023 718 Spyder | Automatic (AM-S7) | 6 | 20 | 18 | 24 | $3,697 | $4,437 |
| 2022 718 Spyder | Manual 6-speed | 6 | 19 | 17 | 23 | $3,893 | $4,672 |
| 2022 718 Spyder | Automatic (AM-S7) | 6 | 20 | 18 | 24 | $3,697 | $4,437 |
| 2021 718 Spyder | Manual 6-speed | 6 | 19 | 17 | 23 | $3,893 | $4,672 |
| 2021 718 Spyder | Automatic (AM-S7) | 6 | 20 | 18 | 24 | $3,697 | $4,437 |
| 2020 718 Spyder | Manual 6-speed | 6 | 19 | 16 | 23 | $4,045 | $4,854 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Cayman S | Manual 6-speed | 4 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2023 718 Cayman S | Automatic (AM-S7) | 4 | 22 | 19 | 25 | $3,521 | $4,225 |
| 2022 718 Cayman S | Manual 6-speed | 4 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2022 718 Cayman S | Automatic (AM-S7) | 4 | 22 | 19 | 25 | $3,521 | $4,225 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Boxster | Automatic (AM-S7) | 4 | 24 | 21 | 27 | $3,214 | $3,857 |
| 2023 718 Boxster | Manual 6-speed | 4 | 22 | 20 | 25 | $3,412 | $4,095 |
| 2022 718 Boxster | Manual 6-speed | 4 | 22 | 20 | 26 | $3,360 | $4,032 |
| 2022 718 Boxster | Automatic (AM-S7) | 4 | 24 | 21 | 27 | $3,214 | $3,857 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Boxster S | Manual 6-speed | 4 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2023 718 Boxster S | Automatic (AM-S7) | 4 | 22 | 19 | 25 | $3,521 | $4,225 |
| 2022 718 Boxster S | Manual 6-speed | 4 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2022 718 Boxster S | Automatic (AM-S7) | 4 | 22 | 19 | 25 | $3,521 | $4,225 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2023 718 Boxster GTS | Manual 6-speed | 6 | 19 | 17 | 24 | $3,832 | $4,599 |
| 2023 718 Boxster GTS | Automatic (AM-S7) | 6 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2022 718 Boxster GTS | Manual 6-speed | 6 | 19 | 17 | 24 | $3,832 | $4,599 |
| 2022 718 Boxster GTS | Automatic (AM-S7) | 6 | 21 | 19 | 24 | $3,577 | $4,292 |
| 2021 718 Boxster GTS | Manual 6-speed | 6 | 19 | 17 | 24 | $3,832 | $4,599 |
| 2021 718 Boxster GTS | Automatic (AM-S7) | 6 | 21 | 19 | 24 | $3,577 | $4,292 |
Data source: Fuel Economy USA, Reference.