The Porsche Cayman is not an unreliable car — but it comes with a weak-point profile that stays invisible without expert knowledge and can become very expensive when something goes wrong. checkdenwagen.de is an independent provider of on-site used-car inspections operating throughout Germany, based in Berlin with a network of inspectors across the whole country. Our inspector comes directly to the vehicle's location — no workshop appointment, no sales pressure — and examines your prospective Cayman for around 1.5 hours using an inspection catalogue with over 100 points. On the 987.1 (model years 2005-2008 with the DFI-free M97), the focus is on the IMS bearing (intermediate shaft bearing) and bore scoring: two problems that cannot be identified from the listing alone but make the difference between a good buy and a costly engine failure. The 987.2 (from 2009, M97 with DFI direct injection) and the 981 (2013-2016) are considered far more robust — the 981 is often described by experts as the ideal entry point into buying a used Cayman. The 718 Cayman (from 2016) with its four-cylinder turbo boxer has a different weak-point profile: no IMS risk, but a particulate filter and turbo-related oil-supply risks when the engine is cold. Especially important on the Cayman: track-day detection. The stiffer coupé body makes it the preferred track-day vehicle — clutch wear, brake wear and suspension stress accumulate faster on the track than in everyday use. The result of your inspection: a digital photo report with all findings within 24 hours — as a clear basis for a decision or for negotiation. Our USP: independent of the seller, transparent on price, on-site throughout Germany. Phone: 030 301 32 327.
Have a used Porsche Cayman inspected: on-site used-car inspection, from €289
The Porsche Cayman is the brand's more uncompromising sports coupé: a stiffer body than the Boxster, a more balanced weight distribution, and more track-focused than many of its contemporaries. That is exactly why many Caymans end up on the race track — and don't always come back undamaged. On the 987.1 (2005-2008) there is also the IMS bearing in the M97 boxer: a wear risk that, in the worst case, destroys the engine. Our inspector comes directly to the vehicle, checks over 100 points, detects track-day use and gives you the report within 24 hours. From 289 euros incl. VAT and travel.
Porsche Cayman inspection at a glance
Over 100 inspection points
Systematic inspection following a Cayman-specific catalogue — M97/M97-DFI/FA engine, transmission, suspension, bodywork, coupé stiffness, electronics and documents.
IMS & bore scoring in focus
On the 987.1 (2005-2008): the intermediate shaft bearing (IMS) and cylinder-bore wear (bore scoring) are the critical inspection points — expensive, specialised, and invisible without the right equipment.
Track-day detection
Caymans are driven on the race track more often than average. Our inspector recognises track use from the brakes, clutch, tyre wear and OBD history.
Independent of the seller
No interest in closing the sale. Our inspector works exclusively for you — no commissions, no closeness to dealers or private sellers.
Porsche Cayman 987, 981 and 718: which generation is the right one?
Three generations, three different risk profiles — and three different arguments for an independent inspection. Cayman 987.1 (2005-2008): The first Cayman with the M97 six-cylinder boxer without direct injection. Technically close to the Boxster 987 and sharing with it the known weak points of the M97: the IMS bearing (intermediate shaft bearing) and bore scoring (cylinder-bore wear). A worn IMS bearing can introduce metal shavings into the oil circuit without warning and lead to engine failure. Bore scoring is caused by oil-supply gaps at a low oil level during cornering. On the 987.1 the IMS bearing should ideally already have been replaced (preventive kit), and the service history must be fully documented. Affordable purchase price, but risk buffering needed. Cayman 987.2 (2009-2012): Reworked with direct injection (DFI) — and thus IMS-free in the critical old design. The 987.2 is considered considerably more robust than its predecessor; with regular oil and maintenance servicing, bore scoring is hardly a topic anymore. On top of this: the RMS (rear main seal) at the rear crankshaft flange is likewise a known but manageable weak point on the 987.2 — an oil stain under the engine is the typical symptom. Overall a solid entry-level generation with good value for money. Cayman 981 (2013-2016): The 981 is the most technically mature naturally aspirated Cayman. A completely new engine (MA1 flat-six), new suspension geometry, more rigidity in the coupé structure than ever before. Many Cayman experts describe the 981 as the ideal entry point: no IMS, no bore scoring in the old sense, but it demands complete maintenance and shows weaknesses in heavily stressed clutches and brakes after intensive track use. The GTS model with 340 hp in particular is sought after by enthusiasts. 718 Cayman (982, from 2016): The switch to the four-cylinder turbo boxer (2.0-litre base, 2.5-litre S) marks a turning point. More technically reliable than the M97 generations, no IMS risk, but new question marks: particulate filter on urban short trips, turbocharger oil supply on cold start, and sound character as a polarising factor among enthusiasts. The GT4 and GTS 4.0 (naturally aspirated, 4.0 litres) are the collector versions and command premium prices on the used market — here an inspection is especially relevant because of the high purchase price.
Cayman-typical weak points: what our inspection specifically looks for
IMS bearing (intermediate shaft) — 987.1 M97
The intermediate shaft bearing (IMS bearing) in the M97 six-cylinder boxer of the Cayman 987.1 (model years 2005-2008) is the best-known and most costly weak point of this generation. The IMS is a rolling-element bearing in the rear of the engine block that holds the timing chain in position — wear can lead to bearing failure without warning, spread metal shavings through the oil and destroy the engine in a short time. Repair costs after engine damage are often in the five-figure range. Our inspector checks the engine oil for metallic debris, evaluates the service history for preventive-kit records and assesses the risk based on mileage, oil-change intervals and vehicle age.
Bore scoring — cylinder-bore wear (M97)
Bore scoring refers to the abrasion of the cylinder-bore coating in the M97 boxer — caused by oil-supply gaps during cornering with a low oil level. An early symptom is increased oil consumption; later come blue smoke, rough running on cold start and OBD fault codes. An endoscopic visual inspection is the gold standard for a definitive diagnosis — our inspector records all indicators and gives a risk assessment of whether an endoscopy is sensible as the next step. Bore scoring is relevant for the Cayman 987.1; from the 987.2 (DFI) onwards the risk falls significantly.
Rear main seal (RMS) — rear crankshaft flange
The rear main seal (RMS) at the rear crankshaft flange is a known wear point on the Cayman 987 (above all the 987.1 and 987.2). A leaking RMS leaves oil stains under the engine — often first noticeable as a small oil patch on the garage floor. If it is not replaced, it can lead to significant oil loss and increase the IMS risk on the 987.1. The repair requires removing the transmission and involves several hundred to over a thousand euros in labour costs. Our inspector checks the engine underside for oil traces and assesses the severity.
Clutch — wear from track use
The Cayman with a manual transmission has a clutch whose replacement, depending on the model and scope of work, costs several thousand euros — especially when the RMS or flywheel are changed at the same time. Because the Cayman is used on the race track more often than average, clutch wear is a common finding on vehicles without a complete maintenance history. Our inspector checks the engagement point, the slip behaviour under load and any acoustic abnormalities when engaging and disengaging all gears, and compares the mileage with the last documented clutch replacement.
Brakes and brake discs — track wear
Brake discs and pads on the Cayman show characteristic heat patterns, radial grooves and asymmetric wear under track use. Caymans with optional PCCB (Porsche Ceramic Composite Brake) are technically impressive, but replacing a set of discs new often costs a five-figure sum. Glazed or cracked ceramic discs are an immediate replacement case. Our inspector documents the condition of all four brake assemblies photographically with a description of the findings and gives an estimate of whether replacement is due soon.
Suspension, tie rods and bearings — wear from sporty use
The Cayman's mid-engine suspension is designed for precision — and reacts correspondingly sensitively to worn-out bearings, worn tie rods and tired bushings. On track-used vehicles this wear accumulates faster than in normal road use. Symptoms: slight steering play, creaking in corners, uneven tyre wear. Our inspector tests all suspension components on the test drive and checks tie rods, anti-roll bars and steering for play.
Particulate filter and turbo oil supply — 718 Cayman
The 718 Cayman (from 2016) with its four-cylinder turbo boxer comes without IMS risk — but brings its own weak points. The particulate filter clogs under predominantly short-trip use, because the engine temperature needed for regeneration is rarely reached. In addition, on turbocharged engines the turbocharger's oil supply is a critical point on cold start and when the engine is switched off immediately after sporty use. Our inspector checks the OBD for particulate-filter fault codes and the turbocharger for play and oil pressure.
Service history and service-booklet gaps
On the Porsche Cayman, the service history is a safety indicator, not a nice-to-have. Oil-change intervals, IMS preventive measures, clutch replacements, brake services — all of this should be documented. Gaps in the service booklet on a 987.1 with over 60,000 km are a serious warning sign: the IMS risk in particular depends heavily on the oil-change intervals. Our inspector checks all service records for plausibility, compares the mileage with the maintenance records and assesses the overall risk profile.
Track-day detection — the coupé as a track vehicle
As a closed coupé with a stiffer body than the Boxster, the Cayman is especially popular at legal racing events and track days. However, track use need not be a deal-breaker — as long as it is disclosed and the vehicle was professionally maintained afterwards. Our inspector recognises track-day use from characteristic brake-disc heat behaviour, asymmetric tyre wear, OBD entries for stability-system deactivations, interior traces of safety mounts and roll-cage residue. Every finding is documented in the report.
GT4 and GTS 4.0 — high purchase price, heightened need for inspection
The 718 Cayman GT4 and GTS 4.0 (naturally aspirated, 4.0 litres, 400-420 hp) are collector versions with correspondingly high used prices. That increases the financial significance of an inspection: any undetected weak point — clutch, brakes, suspension, paint history — represents a considerable risk at these price levels. At the same time, GT4 examples have been used at racing events more often than average. Our inspector inspects the GT4 and GTS with the same catalogue, but assesses track indicators with particular care.
Air conditioning and onboard electronics
Caymans that are rarely driven in everyday use and used predominantly on the track or in summer occasionally show air-conditioning compressor problems due to infrequent use — loss of tightness from dried-out seals. The onboard electronics (PCM, sensors, PASM where fitted) can also accumulate fault codes on intensively used vehicles that are not visible without an OBD readout. Our inspector reads out all control units via OBD and checks the air conditioning for cooling performance and compressor operation.
Porsche Cayman engines: M97, M97 DFI, MA1 and four-cylinder turbo
Over the course of its history, the Porsche Cayman has had four different basic engine concepts — with very different long-term characters. M97 without DFI (987.1, 2005-2008): The oldest and most problematic engine in the Cayman range. Six-cylinder boxer with 2.7 litres (Cayman) or 3.4 litres (Cayman S) displacement, without direct injection. IMS bearing and bore scoring are the two critical points here. Oil-change intervals, IMS preventive measures and total mileage determine the residual risk. Engines with a documented preventive-kit IMS and a complete service booklet are far more attractive than those without documentation. M97 DFI (987.2, 2009-2012): Substantially reworked with direct injection (DFI). The IMS bearing in the critical old design is no longer fitted; on regularly serviced engines, bore scoring is no longer a dominant topic. The RMS (rear main seal) remains a known but manageable point. Overall, the 987.2 is regarded as a reliable generation with good long-term behaviour. MA1 naturally aspirated (981, 2013-2016): A completely newly engineered six-cylinder with 2.7 litres (Cayman) or 3.4 litres (Cayman S). No IMS risk, no bore scoring in the old sense. The 981 engine is considered the most robust and best-sounding naturally aspirated Cayman — the GTS model with 340 hp in particular is sought after. Clutch wear after track use remains the primary risk, not the engine itself. FA turbo (718, from 2016): Four-cylinder turbo boxer with 2.0 litres (300 hp) or 2.5 litres (350 hp). Technically reliable, no IMS, but new challenges: particulate filter under short-trip use, turbocharger oil supply, a changed sound character. The GT4 variant (4.0-litre naturally aspirated, derived from the 911 GT3 engine) is technically high-grade and acoustically undisputed — but correspondingly costly to run and repair.
What does a used Porsche Cayman really cost?
The used market for the Porsche Cayman is generation-dependent and has risen considerably in recent years — especially for unworn 981 examples and GT4 models. Cayman 987.1 (2005-2008): The most affordable way into the Cayman segment. Listing prices look tempting — but the IMS and bore-scoring risk is considerable when documentation is poor. Anyone who skimps on the IMS bearing risks engine damage that exceeds the purchase price. So the rule is: the cheaper the offer, the more important the independent inspection. Cayman 987.2 (2009-2012): Noticeably more expensive than the 987.1, but with a considerably calmer risk profile. Well-maintained examples with a complete history are worth their money — poorly documented examples are a risk here too. Cayman 981 (2013-2016): High demand against limited supply drives prices. 981 Caymans are considered a fair investment if condition and service documentation are right. GTS models are rare and command corresponding premiums. 718 Cayman (from 2016): A wide price range depending on equipment, mileage and model variant. The GT4 and GTS 4.0 move into collector territory and are often traded above their original list price. An independent inspection makes economic sense in every one of these price segments: on a cheaper 987.1 it protects you from a bad buy with hidden engine damage; on a 981 or GT4 it secures the high purchase price with a solid factual basis.
How your Cayman inspection works
Book online — in five minutes
Tell us the vehicle location (postcode) and the listing link. Travel is included in the fixed price — no hidden costs. No phone call needed.
Inspector drives to the Cayman — around 1.5 hours
An experienced vehicle appraiser from our nationwide network arranges the appointment directly with the seller and inspects your prospective Cayman for around 1.5 hours on site: OBD readout, paint-thickness measurement, engine check, suspension, track-day check, documents. You don't need to be present.
Digital report within 24 hours
You receive the full inspection report by email: paint-thickness heatmap, OBD findings, photos of all defects, an assessment of IMS risk, clutch and brake condition, plus an overall rating for each inspection category. Ready to use directly in price negotiations.
What our customers say
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Berlin
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Hamburg
“The Premium package gave me a clear overview of the expected repair and maintenance costs. Exactly what I needed.”
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Munich
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Cologne
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Learn moreFrequently asked questions about the Cayman inspection
The IMS bearing (Intermediate Shaft Bearing) is a rolling-element bearing in the M97 six-cylinder boxer engine of the Cayman 987.1 (model years 2005-2008). It holds the timing chain in position and, in this generation, was designed as a ball bearing with a limited service life. Wear can lead to bearing failure without warning — metal shavings then enter the oil circuit and destroy the engine in a short time. The resulting engine damage is usually an economic total loss. From the Cayman 987.2 onwards (2009, DFI), the IMS bearing in its problematic form is no longer fitted. Our inspector assesses the risk based on the oil, service history, mileage and any documented preventive-kit (Präventivsatz) installation.
Buy your Cayman on facts, not gut feeling.
IMS bearing, bore scoring, undisclosed track-day use — the costliest mistakes when buying a Cayman are invisible. Our independent inspection gives you the facts. From 289 euros incl. VAT and travel.
