NHTSA lists 2 safety recalls and 4 owner complaints for the 2015 Porsche Cayman. Most complaints involve air bags (2) and engine (1). The EPA rates it 24–25 mpg combined.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2013-2015 Boxster, 2013-2014 Boxster S, 2014-2015 Cayman, Cayman S, 2015 Boxster GTS, and Cayman GTS vehicles. The rear-axle carrier side sections may fracture.
Porsche Cars North America, Inc. (Porsche) is recalling certain model year 2014-2015 Porsche 911, Boxster, and Cayman vehicles manufactured May 7, 2014, to September 23, 2014. The front hood upper lock components were not manufactured to specification and may fail to securely latch the vehicle's hood during operation.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“Porsche dashboard leather has strunk and separated from the main dashboard. My understanding is that in the event of an accident, this could interfere with the airbag's ability to deploy correctly. A Porsche dealer has reviewed but was unable to repair it. The next step would be to replace. I've discovered this is a very common issue with Porsche vehicles from model years similar to this one.”
“The Cayman S model with V6, 3.4L motor, commonly referenced as a 9A1 motor had been self destructing with increasing amounts of metal slivers/chips found in the drained oil, oil filter and oil filter housing. The in-warranty Porsche dealer "installed oil" was first inspected by my shop at 27,031 mi - alarmingly metal was found, PIC attached. Metal was non magnetic, appearing to be aluminium. Subsequent oil/filter inspections found the metal volume to be significantly increasing, PIC attached, putting the motor at risk of self destructing. Car was parked with only 29,509 mi in fear of having the motor blowup/lockup while driving at highway speeds. It would have the potential of stopping abruptly or locking up the rear wheels putting the car in a spin, possibly causing a crash. Risky. Without taking the motor out and disassembling, professional opinion and speculation indicates possible early main crankshaft bearing or rod bearing failure. Motor needs replaced (estimates from $25,000 to $45,000 depending on damage and whether a dealer or independent does the work.) The vehicle is currently parked and taken off the road. Too expensive to fix. Porsche North America…”
“The contact owns a 2015 Porsche Cayman. The contact stated that the vehicle was taken to the dealer for the rear housing axle carriers repair under NHTSA Campaign Number: 21V679000 (Power Train). However, upon picking up the vehicle, the rear suspension was unstable and drifted all over the road while driving. The contact was able to drive to his residence. The vehicle was taken back to the dealer who inspected the vehicle and completed a torque adjustment however, the failure persisted. The dealer was notified but did not provide any assistance. Additionally, the contact stated that the vehicle had not experienced a failure prior to the recall repair. The contact also stated that the engine was located at the rear of the vehicle, which presented a severe potential risk to safety. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The contact was awaiting a call back from the manufacturer. The failure mileage was approximately 40,000.”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Cayman Auto (AM-S7), 6 cyl, 2.7 L · Rear-Wheel Drive | 22 | 31 | 25 | $3,200 | 352 |
| Cayman Man 6-spd, 6 cyl, 2.7 L · Rear-Wheel Drive | 20 | 29 | 24 | $3,300 | 376 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
2 safety recalls as of Nov 6, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 4 complaints with NHTSA. The most-cited components are air bags (2), engine (1), power train (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2015 Porsche Cayman at 24–25 mpg combined, depending on engine and drivetrain (2 versions rated).