Porsche Cayman 987c (2005 – 2013)

Reliability score : 7.4/10

The Porsche Cayman (type 987c) is a mid-engine sports coupe derived from the Boxster 987. Introduced in late 2005 in its 'S' version (3.4L), it was joined in 2006 by the base version (2.7L). It stands out for its exceptional dynamic balance, often considered superior to that of the contemporary 911 thanks to its engine placement. The 987 generation is divided into two crucial phases for reliability: Phase 1 (2005-2008) equipped with M97 family engines (with IMS bearing), and Phase 2 (2009-2013) which introduces the new 9A1 (or MA1) engine architecture devoid of an intermediate shaft (IMS) and equipped with direct injection on the S versions, marking a major leap in reliability. A radical 'R' version crowned the range at the end of its career.

✅ Strengths

Exceptional chassis balance (mid-engine)
Remarkable reliability of the 9A1 engines (Phase 2 from 2009)
Finish quality and aging of interior materials
Captivating sound of the naturally aspirated Flat-6
PDK gearbox (Phase 2) very responsive and reliable if well maintained
Very low depreciation, even rising values for R and Phase 2 versions

⚠️ Weaknesses

Phase 1 engines (M97): Sword of Damocles of the IMS bearing
3.4 S Phase 1 engine: proven risk of bore scoring
Maintenance and spare parts cost (Porsche pricing)
Very limited mechanical accessibility (encapsulated engine)
Tiptronic S gearbox (Phase 1) slow and outdated compared to the PDK

🎯 Verdict

The Porsche Cayman 987 is an exceptional sports car, but its purchase requires great caution depending on the production year. We highly recommend favoring a Phase 2 (2009-2013). The 2.9 and 3.4 direct injection engines (9A1) have eradicated the IMS and bore scoring problems that tarnish the reputation of the Phase 1. If your budget limits you to a Phase 1 (2005-2008), the purchase should only be made after a rigorous inspection: PIWIS test for over-revs and cylinder endoscopy (especially on the 3.4 S) are non-negotiable. A well-maintained Phase 2 model is a very safe 'passion' purchase and a potential future classic (especially the Cayman R).

Common issues

Problème de roulement d'arbre intermédiaire (IMS) - Moteurs M97 (987.1, 2005-2008) High

🔧 80 000 – 150 000 km

💶 2 000 – 3 500 € (préventif, souvent avec embrayage) ; 10 000 – 20 000 € (si défaillance moteur)

Vérifier l'historique de remplacement ou prévoir le remplacement préventif sur 987.1.

Rayures de cylindres (Bore Scoring) - Moteurs M97 (987.1, 2005-2008) High

🔧 80 000 – 180 000 km

💶 8 000 – 15 000 € (reconstruction moteur)

Faire inspecter les cylindres (endoscopie) avant achat, surtout sur 987.1.

Fuites des tuyaux de liquide de refroidissement (plastique) Medium

🔧 100 000 – 180 000 km

💶 800 – 1 500 €

Surveiller le niveau de liquide et les traces de fuite sous le véhicule.

Défaillance du séparateur Air/Huile (AOS - Air/Oil Separator) Medium

🔧 80 000 – 150 000 km

💶 400 – 800 €

Attention à la fumée bleue à l'échappement et à la consommation d'huile élevée.

Estimated maintenance costs

Oil change	£200 – 350
Clutch	£1 600 – 2 500
Complete brakes	£1 000 – 1 800
Estimated annual budget	£1 300 – 2 200

Indicative estimates (independent garage, UK market). Prices vary by region and year.