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Porsche Cayman fuel consumption

Of all Porsche Cayman modifications produced from 2005 to 2021 real fuel consumption according to user ratings is approximately 24% higher compared to advertised consumption. Starting from 2005 Porsche Cayman average difference between actual owner-reported fuel consumption and stated consumption was slightly above industry average, at 2007 it was less than industry average, at 2019 difference between owner-reported and advertised fuel economy became slightly above industry average. It should be noted that the gap between advertised and actual fuel economy changed quite significantly across the entire automotive industry during this period. For more details, see the table below.

Year-to-year deviations of actual owner-reported average fuel consumption from advertised values

YearGasoline cars
All carmakersPorsche Cayman
2005+8%+12%
Show all years
2006+9%+9%
2007+11%+9%
2008+12%+9%
2009+14%+11%
2010+16%+17%
2011+19%+17%
2012+21%+17%
2013+23%+17%
2014+26%+29%
2015+27%+39%
2016+28%+36%
2017+28%+31%
2018+28%+31%
2019+27%+31%
2020+27%+31%
2021+26%+31%

See below for the actual consumption of generations and versions of Porsche Cayman.

2016

Porsche Cayman 2016 fuel economy

Average advertised fuel consumption for petrol engines31.7 MPG
7.4 l/100km
Average real-world fuel consumption for petrol engines24.2 MPG
9.7 l/100km
Average real gasoline consumption difference *+31%

According to advertised fuel consumption, a Porsche Cayman 2016 with automatic transmission consumes on average 0.7 liters per 100 km or 9% less fuel than similar versions with manual gearbox.

Compared to similar cars from other manufacturers, the Porsche Cayman fuel economy is significantly above average. Of all modifications the best advertised fuel economy in its class has Porsche Cayman with 2.5 petrol engine and automatic transmission (Porsche 718 Cayman S 2.5 350 HP).

ModificationClaimed consumptionReal consumption
2.0 liter petrol engine
Porsche 718 Cayman 2.0 300 HP manual 31.8 MPG
7.4 l/100km
24.2 MPG
9.7 l/100km+31%
Porsche 718 Cayman 2.0 300 HP automatic 34.1 MPG
6.9 l/100km
2.5 liter petrol engine
Porsche 718 Cayman S 2.5 350 HP manual 29.0 MPG
8.1 l/100km
Porsche 718 Cayman S 2.5 350 HP automatic 32.2 MPG
7.3 l/100km
2013 - 2016

Porsche Cayman 2013 fuel economy

Average advertised fuel consumption for petrol engines27.4 MPG
8.6 l/100km
Average real-world fuel consumption for petrol engines17.6 MPG
13.4 l/100km
Average real gasoline consumption difference *+38%

According to advertised fuel consumption, a Porsche Cayman 2013 with automatic transmission consumes on average 0.7 liters per 100 km or 8% less fuel than similar versions with manual gearbox.

Of all modifications the best advertised fuel economy in its class has Porsche Cayman with 2.6 petrol engine and automatic transmission (Porsche Cayman 2013 2.7 2.6 275 HP).

ModificationClaimed consumptionReal consumption
2.6 liter petrol engine
Porsche Cayman 2013 2.7 2.6 275 HP manual 28.7 MPG
8.2 l/100km
Porsche Cayman 2013 2.7 2.6 275 HP automatic 30.5 MPG
7.7 l/100km
3.4 liter petrol engine
Porsche Cayman 2013 S 3.4 325 HP manual 26.7 MPG
8.8 l/100km
Porsche Cayman 2013 S 3.4 325 HP automatic 29.4 MPG
8.0 l/100km
Porsche Cayman 2014 GTS 3.4 340 HP manual 26.1 MPG
9.0 l/100km
20.3 MPG
11.6 l/100km+29%
Porsche Cayman 2014 GTS 3.4 340 HP automatic 28.7 MPG
8.2 l/100km
3.8 liter petrol engine
Porsche Cayman 2015 GT4 3.8 385 HP manual 22.8 MPG
10.3 l/100km
15.5 MPG
15.2 l/100km+48%
2009 - 2013

Porsche Cayman 2009 fuel economy

Average advertised fuel consumption for petrol engines25.0 MPG
9.4 l/100km
Average real-world fuel consumption for petrol engines20.9 MPG
11.3 l/100km
Average real gasoline consumption difference *+17%

According to advertised fuel consumption, a Porsche Cayman 2009 with automatic transmission consumes on average 0.4 liters per 100 km or 4% less fuel than similar versions with manual gearbox.

Compared to similar cars of other manufacturers, the Porsche Cayman advertised fuel economy is slightly better than average, but according to available user reports on actual consumption, real fuel economy is slightly worse than average.
Of all modifications the best advertised fuel economy in its class has Porsche Cayman with 3.4 petrol engine and automatic transmission (Porsche Cayman 2009 S 3.4 320 HP).

ModificationClaimed consumptionReal consumption
2.9 liter petrol engine
Porsche Cayman 2009 2.9 265 HP manual 25.0 MPG
9.4 l/100km
22.4 MPG
10.5 l/100km+12%
Porsche Cayman 2009 2.9 265 HP automatic 25.8 MPG
9.1 l/100km
3.4 liter petrol engine
Porsche Cayman 2009 S 3.4 320 HP manual 24.0 MPG
9.8 l/100km
19.6 MPG
12.0 l/100km+22%
Porsche Cayman 2009 S 3.4 320 HP automatic 25.0 MPG
9.4 l/100km
2005 - 2009

Porsche Cayman 2005 fuel economy

Average advertised fuel consumption for petrol engines23.3 MPG
10.1 l/100km
Average real-world fuel consumption for petrol engines21.2 MPG
11.1 l/100km
Average real gasoline consumption difference *+9%

According to advertised fuel consumption, a Porsche Cayman 2005 with automatic transmission consumes on average 0.6 liters per 100 km or 7% more fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation Porsche Cayman with automatic transmission consumes around 1.4 litres per 100 km or 13% more fuel than a version with the same engine but a manual gearbox.

Compared to similar cars from other manufacturers, the Porsche Cayman fuel economy is slightly worse than average. The best real fuel economy in its class according to user reviews of all the modifications has modification with 3.4 petrol engine and manual transmission (Porsche Cayman 2005 S 3.4 295 HP). However, of all modifications the best advertised fuel economy in its class has Porsche Cayman with 2.7 petrol engine and manual transmission (Porsche Cayman 2006 2.7 245 HP).

ModificationClaimed consumptionReal consumption
2.7 liter petrol engine
Porsche Cayman 2006 2.7 245 HP manual 24.8 MPG
9.5 l/100km
23.8 MPG
9.9 l/100km+4%
Porsche Cayman 2006 2.7 245 HP manual 25.3 MPG
9.3 l/100km
23.8 MPG
9.9 l/100km+6%
Porsche Cayman 2006 2.7 245 HP automatic 23.3 MPG
10.1 l/100km
20.8 MPG
11.3 l/100km+12%
3.4 liter petrol engine
Porsche Cayman 2005 S 3.4 295 HP manual 22.2 MPG
10.6 l/100km
20.5 MPG
11.5 l/100km+8%
Porsche Cayman 2005 S 3.4 295 HP automatic 21.4 MPG
11.0 l/100km
18.4 MPG
12.8 l/100km+16%

* - Difference between advertised and user reported fuel economy has been calculated taking into account only those car versions for which information is available both on the fuel consumption specified by the manufacturer and reported by users.

User-reported fuel consumption may not accurately represent all users' experiences due to variables such as driving conditions, driving style, technical condition of the vehicle, and other circumstances. Thus, it should not be relied upon as a representative indicator.