2018 Porsche Cayman • Compare 7 used cars with valuation

Market overview: Price Analysis (September-2026): A used 2018 Porsche Cayman typically costs between £26,150 and £48,066 • On average, used 2018 Porsche Cayman cars have covered 51,225 miles – with a few high-mileage examples reaching up to 93,680 miles • Depreciation and price trends over the last 12 months for the 2018 Porsche Cayman stand at £0.