Porsche 911 Turbo S Cabriolet MPG by year — every rating on record

The Porsche 911 Turbo S Cabriolet has a combined EPA fuel economy rating for 15 model years, from 2010 to 2026. Across those years its best rated version returned 21 mpg (2017) and its thirstiest returned 16 mpg (2024). The EPA record holds 15 configurations for this nameplate, most recently a Minicompact Cars.

Year-by-year EPA ratings

Where it has stood in its class

Ranked against every other nameplate the EPA filed under the same class that year. The Porsche 911 Turbo S Cabriolet placed highest in 2010 at #24 of 29, and lowest in 2012 at #34 of 39. It spent 0 of its 15 ranked years in the top half of its class.

Every configuration on record

All 15 configurations EPA lists for this nameplate, newest first.

How the rating has moved between model years

Comparing the best-rated configuration of each year. 3 of 5 year-over-year steps improved the top rating.

What 911 Turbo S Cabriolet fuel costs over a year

At the EPA's 11,500 miles a year, the 2026 Porsche 911 Turbo S Cabriolet burns 639 to 639 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.

EPA’s own estimate for the 2026 model year is $4,300 to $4,300 a year in fuel, or $10,250 more than the average new vehicle over five years.

How it compares with other Minicompact Cars

Across the 153 nameplates EPA classifies as Minicompact Cars, the median best combined rating is 21 mpg. At 18 mpg the Porsche 911 Turbo S Cabriolet is 3 mpg below the median, which is worth about $319 a year at $3.50 a gallon.

• All Minicompact Cars rankings — every nameplate in the class, best to worst.

Other Porsche nameplates

Every Porsche model compared → — all nameplates ranked by best combined rating, with what each one costs a year.