Actual costs and depreciation: Porsche 917 Cayman with PDK

Four cylinders looks economical. Boxer engine less and 300 hp and not at all. We tested and calculated how economical the Porsche 917 Cayman would be in everyday use.

Those who drive a Porsche tend not to be among those drivers showered with goosebumps, cold sweats, and pump panic attacks – or perhaps they are? Because sports vehicles in particular are generally assumed to have a certain aptitude for drinking, which is high even when driving quietly and sometimes out of control at a sporting pace. Especially when sporty performance is tickled by the small, sophisticated turbo engines. The supercharged four-cylinder boxer in the Porsche 718 Cayman with PDK is not really small: the mid-engine sports car has a displacement of almost 2 liters. But with 300 hp and a maximum torque of 380 Nm, the cheapest basic Porsche (without PDK) isn’t exactly blessed with an overly large combustion chamber size. What effect does this have on depreciation characteristics and cost balance? We tested it.

Our test consumption

Porsche sets a standard WLTP consumption of 8.6 liters for its base model. In testing, this converts to 9.7 liters of Super Plus, which results in a fuel cost of €19.50 for 100 kilometers. At exactly 7.0 liters, the Eco consumption is much lower than the WLTP level; The equivalent value of gasoline required for a distance of 100 km drops to 14.07 euros. Acceptable value! The sporty driving style increases consumption to 12.3 liters and fuel costs to 24.72 euros per 100 kilometres. With the consumption of the Pender, 9.7 liters flows through the combustion chambers, resulting in daily costs of 19.50 euros. These values ​​are calculated using the daily updated fuel price on our partner portal (08.06.2022 / Super Plus: € 2.01 / liter).

Achim Hartmann

Test consumption consists of 70% of the passenger tour and 15% of both the Eco and Sport.

Monthly maintenance costs

As with any other vehicle, auto taxes are paid year after year on a Porsche 718 Cayman. It costs €304 for a large sports SUV. According to Allianz Direct, liability insurance costs 349 euros for the same period. A partially comprehensive upgrade costs another 269 euros. An additional €788 is due for the fully inclusive policy. In general, the monthly maintenance costs are 423 euros if the 718 Cayman is driven 15,000 kilometers per year. If the mileage is doubled, the Porsche costs 785 euros per month. We leave the loss in value in this account.

Real costs and depreciation: Porsche 917 Cayman (PDK)

Achim Hartmann

The cost of the Porsche 718 in the test car is 69,970 euros. The base including the PDK is available from 60,864 euros.

This is how it is tested

The car and sport engine depreciation test consists of three different depreciation cycles. The so-called “passenger consumption” accounts for 70 per cent. This is a trip from home to work, and it averages 21 kilometers. A particularly economical eco-roll, the length of which is about 275 kilometers, is included in the rating by 15 percent. The remaining 15 percent is calculated on the lap of the sporty driver. The length is about the same as the eco lap, but the track has a greater proportion of the highway and therefore higher average speeds. The basis for calculating fuel costs is always the price displayed on the “More tanks” portal on the day the article was created.

Monthly maintenance costs include maintenance, wear parts costs and vehicle taxes based on assumed annual mileage of 15,000 and 30,000 km without loss of value. Calculation based on trial depreciation, three-year retention period, no-claims SF12 liability category and all-inclusive insurance with Allianz Direct, including discounts for garage parking and restrictions on certain drivers (no accidents/annually 15,000 km/resident in code area Postal 70174 / Not less than 21 / Partner driver over 25 years old.


The Porsche 718 Cayman with PDK and 300 hp costs at least 60,864 euros and consumes an average of 9.7 liters, which entails a fuel cost of 19.50 euros per 100 km. – Monthly maintenance costs 423 euros with an annual mileage of 15,000 km. If this increases to 30,000 km, the amount increases to 785 euros per month.

Technical information

Porsche 718 Cayman Cayman
Base price €60,864
external dimensions 4379 x 1801 x 1295 mm
trunk size 150 to 275 liters
Displacement / Engine 1988 cc / 4 cylinder
perfomance 220 kW / 300 hp at 6500 rpm
maximum speed 275 km/h
0-100 km/h 4.6 seconds
consumption 7.9 liters per 100 km
Test consumption 9.7 liters per 100 km

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