Does the 2011 Porsche 911 Carrera 4S Cabriolet take premium or regular gas?

The EPA lists the 2011 Porsche 911 Carrera 4S Cabriolet 3.8L 6-cyl, Automatic 7-spd, AWD as taking premium. Combined MPG is 21, and at today's gas prices that's about $3,343 a year in fuel.

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2011 Porsche 911 Carrera 4S Cabriolet — 3.8L 6-cyl, Automatic 7-spd, AWD

This 2011 Porsche 911 Carrera 4S Cabriolet (3.8L 6-cyl, Automatic 7-spd, AWD) takes premium gasoline. PREMIUM

MPG combined (19 city / 26 hwy)

$3,343

est. fuel cost / year (today’s prices, 15k mi)

—

tailpipe CO₂

At today's AAA national average price ($4.68/gal, 2026-07-05) — the EPA's own price/date assumption isn't exposed in the public dataset, so we recompute this from the EPA's MPG figure and a sourced current price.

EPA updated its fuel-economy equations again for model year 2017 — mostly affecting hybrids and turbocharged engines — and recalculated 2011-2016 ratings to match, in some cases 1-2 MPG lower. The number above already reflects that update.

The EPA lists this trim as premium because that's the fuel the manufacturer specified for its mileage test. Many such engines will run on regular with slightly lower power and MPG — but check your owner's manual to see whether premium is required or just recommended.

Other 2011 Porsche 911 Carrera 4S Cabriolet trims

Trim	Fuel	MPG	Fuel/yr
3.8L 6-cyl, 6-spd manual, AWD	PREMIUM	20	$3,510

EPA fuel type: Premium · class: Minicompact Cars · engine: 3.8L 6-cyl · transmission: Automatic 7-spd · drive: AWD · MPG retrieved 2026-07-24.