Research · Two Seaters

2015 Porsche Cayman SRecalls, problems, MPG & safety

NHTSA lists 0 safety recalls and 4 owner complaints for the 2015 Porsche Cayman S. Most complaints involve air bags (2) and engine (1). The EPA rates it 22–24 mpg combined.

Combined MPG
22–24mpg
EPA · 2 versions
NHTSA overall
—
Not rated by NCAP
Safety recalls
0campaigns
NHTSA
Owner complaints
4
Top: air bags
Fuel cost / yr
$3,300est.
EPA estimate, best version
01 —Recalls

Safety recalls

NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2015 Porsche Cayman S as of Oct 28, 2026.
Data from NHTSA Recalls API · synced Oct 28, 2026NHTSA vehicle page
02 —Complaints

Owner complaints by component

4 complaints filed with NHTSA · Jan 2022 – Jul 2024
  1. Air bags2
  2. Engine1
  3. Power train1
  4. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each Cayman S model year we’ve synced.

View as table
Model yearNHTSA complaints
200612
20115
20154
20167
Crashes reported
0
Fires reported
0
Injuries reported
0
Deaths reported
0
Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Air bags

2 reports
“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.”
Owner complaint to NHTSAFiled Jul 31, 2024Air bags, Unknown or otherODI 11605640

Engine

1 report
“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…”
Owner complaint to NHTSAFiled Nov 3, 2022EngineODI 11492138

Power train

1 report
“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.”
Owner complaint to NHTSAFiled May 12, 2022Power trainODI 11464390
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026
04 —Key specs

Engines, transmissions & drive

2 versions rated by the EPA
EPA class
Two Seaters
Engines
3.4L 6-cyl
Transmissions
Automatic (AM-S7) · Manual 6-spd
Drive
Rear-Wheel Drive
Fuel
Premium Gasoline

Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.

Data from EPA fueleconomy.gov · synced Oct 28, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Cayman S
Auto (AM-S7), 6 cyl, 3.4 L · Rear-Wheel Drive
212924$3,300372
Cayman S
Man 6-spd, 6 cyl, 3.4 L · Rear-Wheel Drive
202722$3,600397
  • Cayman S
    Auto (AM-S7), 6 cyl, 3.4 L
    21 city · 29 hwy · $3,300/yr
    24
    mpg comb.
  • Cayman S
    Man 6-spd, 6 cyl, 3.4 L
    20 city · 27 hwy · $3,600/yr
    22
    mpg comb.
Data from EPA fueleconomy.gov · synced Oct 28, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

1 tested variant
NHTSA has not published 5-Star Safety Ratings for the 2015 Porsche Cayman S as of Oct 28, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Oct 28, 2026Vehicle 9757
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

2015 Cayman S questions

How many recalls does the 2015 Porsche Cayman S have?

0 recalls found in NHTSA data as of Oct 28, 2026.

What are the most common 2015 Porsche Cayman S problems?

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.

What MPG does the 2015 Porsche Cayman S get?

The EPA rates the 2015 Porsche Cayman S at 22–24 mpg combined, depending on engine and drivetrain (2 versions rated).

Data from NHTSA & EPA · synced Oct 28, 2026