Porsche 718-cayman-gt4

Year by year

A model year gets its own page when it has enough data for at least three sections

Crash-test ratings by year

NHTSA 5-star results for 4 model-year variants; not yet fully rated. Rollover risk is the estimated chance of rolling over in a single-vehicle crash.

NHTSA New Car Assessment Program (5-Star Safety Ratings), api.nhtsa.gov · US federal work, public domain

Fuel consumption by year

Official Canadian test results for 4 model years, best variant per year. Combined consumption ranges from 11.6–12.5 L/100 km.

Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada

MOT test results in Great Britain

344 718-cayman-gt4 cars took their annual MOT test in 2023; 97% passed first time, against 88% for all cars of the same ages. Older cars fail more often, so compare a year with the same year of other cars.

Why they fail

Share of all first tests that ended in a fail because of each part of the car (one test can fail on several).

DVSA anonymised MOT tests and results, 2023 (Department for Transport) · Open Government Licence v3.0 · first tests of cars only; a fix made at the test station within the hour still counts as a fail

New registrations in Europe

2,486 new Porsche 718-cayman-gt4 cars registered in the EU, Norway and Iceland between 2019 and 2022, from the European Environment Agency's CO₂ monitoring of every new car. In 2022 the largest markets were Germany (143), Sweden (33), Luxembourg (12).

Averages are weighted by registrations; CO₂ is the type-approval value (NEDC until the WLTP switch). European Environment Agency, CO₂ emissions from new passenger cars · re-use permitted with acknowledgement

Real-world fuel consumption

464 Porsche 718-cayman-gt4 cars registered in Europe between 2021 and 2023 report their fuel use through the on-board meter. Petrol versions average 14.2 l/100 km on the road, against 10.8 l/100 km in the official WLTP test — 32% more.

Litres per 100 km: total fuel used divided by total distance driven, from the car's own fuel consumption meter (OBFCM), collected in 2024 by the manufacturers, mostly remotely, and by national authorities. WLTP figures are the type-approval CO₂ values converted to litres. Hybrids, including mild hybrids, do not plug in; plug-in hybrid figures include the distance driven on electricity. European Environment Agency, Real-world CO₂ emissions from cars and vans · CC BY 4.0

What it costs in fuel

On real-world figures the Porsche 718-cayman-gt4 uses 14.2 litres per 100 km, so 15,000 km a year takes about 2,120 litres: €4,628 at this week's average price in Germany, its largest market in Europe.

Fuel for 15,000 km (9,300 miles) a year at real-world consumption. Pump prices with taxes, week of 19 October 2026: European Commission Weekly Oil Bulletin, UK Department for Energy Security and Net Zero, US Energy Information Administration. Non-euro EU prices are in euros as the Bulletin publishes them.

EU safety alerts

Safety Gate, the European Union's rapid alert system, names the 718-cayman-gt4 in 1 alert. European versions can differ from the North American car.

Safety Gate (European Commission) · CC0