Porsche Cayenne 955 and 957 buying guide

2002 to 2010. A first generation Cayenne suits a buyer who wants a fast, capable SUV cheaply and will pay for a specialist inspection first.

Big jobs

V8 plastic coolant pipes. Early V8s used plastic cooling pipes under the engine that are known to fail and burst. Later cars had metal pipes, and conversion kits are affordable. Coolant leaks are common on the 955 4.5 V8.
Air suspension (Turbo and Turbo S). Air springs and the compressor fail, shown by a sagging car and a harsh, bumpy ride, and the bills are big.

Tiptronic shift quality. The earliest years had hard shifting from the Tiptronic, cured in later years with a TCU update. Gearbox trouble is fairly rare with proper service.
Brakes. Discs and pads can wear out quicker than expected, especially on V8s. Front discs are about 550 pounds a pair in the UK.
Water leaks from sunroof drains and boot seals. The sunroof drainage channels can clog and let water in, and the boot seals are also known to leak.
Deferred maintenance. FCP Euro says lack of service and deferred maintenance cause most Cayenne problems, and some electrical parts need coding by a specialist.

Headlining, instrument pixels and sticky plastics. The headlining sags with age, the instrument display can lose pixels, and soft touch plastics turn sticky, often after harsh cleaners.

Researched 2026-11-05. General guidance from owner and specialist sources. Check the specific car with an independent inspection.