FuelFacts

2012 Porsche Cayman MPG & Specs — Real-World vs EPA, All Trims

Every gas trim of this model takes premium.

22–23
MPG combined (19–20 city / 26–29 hwy)
$3,052–$3,191
est. fuel / year (today's prices, 15k mi)
Premium
gas type

Is the 2012 Porsche Cayman good on gas?

At up to 23 MPG combined, the 2012 Porsche Cayman is better than average for a Two Seaters — that class averages about 19.4 MPG across 2,500 EPA-tested versions, so it's a good pick on fuel for its size.

Real-world MPG vs the EPA number

The EPA figures above come from a standardized dynamometer test, not the open road — real-world MPG typically runs a bit lower depending on your driving, climate and terrain. That's true of every car on this site, old or new.

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.

At today's AAA national average price — $4.68/gal for premium gas as of 2026-07-05 — the most efficient trim runs about $3,052/year (roughly $254/month, about $20.35 per 100 miles) at the EPA's assumed 15,000 miles/year, using an estimated 652 gallons a year. We don't estimate a cost-per-fill since exact tank size isn't in the public EPA dataset, but the per-100-mile figure scales to any tank. Current national average gas prices →

2012 Porsche Cayman trims & fuel economy

Trim (engine / transmission)FuelMPGFuel/yr (today's price)
2.9L 6-cyl, Automatic 7-spd, RWDPREMIUM23$3,052
2.9L 6-cyl, 6-spd manual, RWDPREMIUM22$3,191
Where the EPA lists premium, that’s the fuel the maker specified for the mileage test — many such engines run on regular with slightly less power/MPG. Whether premium is required or just recommended is an owner’s-manual detail the EPA dataset omits, so we don’t guess it.

2012 Porsche Cayman specs

What the EPA test-car listings record for this model year — every combination sold is a row in the trims table above.

Engine options2.9L 6-cyl
TransmissionAutomatic 7-spd · 6-spd manual
Drive typeRWD
EPA body classTwo Seaters
FuelPremium

Other years of the Porsche Cayman

2017 Porsche Cayman2016 Porsche Cayman2015 Porsche Cayman2014 Porsche Cayman2011 Porsche Cayman2010 Porsche Cayman2009 Porsche Cayman2008 Porsche Cayman

Similar cars (Two Seaters)

2012 Porsche Cayman R2012 Mercedes-Benz SLS AMG2012 Ferrari California2012 Bentley Continental Supersports2012 Ferrari 458 Italia Coupe2012 Ferrari 458 Italia Spider

Cars that take premium · Cheapest cars to fuel · Where fuel grade depends on the trim · Fuel guides

2 trim(s) · EPA FuelEconomy.gov data retrieved 2026-07-24 · fuel prices AAA national average as of 2026-07-05.