The Porsche 718 Spyder does 18.5 mpg combined (16.3 city, 22.2 highway), which works out to about $2,076 a year in fuel at $3.20 a gallon and 12,000 miles. Against other V6 cars it sits below the average of 19.9 mpg.
Every Porsche 718 Spyder engine, compared
The Porsche 718 Spyder was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 4L 6-cyl | 16.3 / 22.2 | 2020–2025 | $2,076 |
What that actually costs
The Porsche 718 Spyder burns a gallon every 18.5 miles, so 12,000 miles takes about 649 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.173 |
| Fuel per year | $2,076 |
| Fuel over five years | $10,380 |
| Against other V6 cars | +$146 a year |
| EPA's own estimate | $4,200 a year |
City or highway — who is this car for
The Porsche 718 Spyder gives up 5.9 mpg the moment you leave the motorway — 22.2 out there against 16.3 in town, a 36% drop worth $626 a year. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 16.3 mpg | $2,356 a year if you only drive in town |
| Highway | 22.2 mpg | $1,730 a year if you mostly commute |
| Gap | +5.9 mpg (36%) | Wide — this car dislikes traffic |
How the 718 Spyder changed over the years
The 718 Spyder peaked in 2023 at 20 mpg (18 city, 24 highway) and was at its thirstiest in 2025 at 16 — 4 mpg apart, or $480 a year in fuel between buying one year and the other. The 2025 car does 16. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2025 | 14 / 19 | 1 | $2,400 | |
| 2024 | 14 / 19 | 1 | $2,400 | |
| 2023 | 18 / 24 | 1 | $1,920 | |
| 2022 | 18 / 24 | 1 | $1,920 | |
| 2021 | 18 / 24 | 1 | $1,920 | |
| 2020 | 16 / 23 | 1 | $2,021 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 6 EPA ratings of the Porsche 718 Spyder — 1 engine across 2020–2025. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $4,200. Full method.
Frequently asked questions
What mpg does the Porsche 718 Spyder get?
18.5 mpg combined on average — 16.3 in the city and 22.2 on the highway, per EPA ratings across 2020–2025.
How much does a Porsche 718 Spyder cost in fuel per year?
About $2,076 at 12,000 miles and $3.20 a gallon — roughly $10,380 over five years, or 0.173 dollars a mile.
Which 718 Spyder engine is the most economical?
The 4L 6-cyl at 18.5 mpg.
Is the 718 Spyder good on fuel compared with similar cars?
Against other V6 cars it sits below the average of 19.9 mpg, computed across 4940 ratings.
Are these real-world 718 Spyder figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Porsche 718 Spyder is $4,200 against the $2,076 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
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