2018 Porsche Cayman: recalls, fuel economy and safety ratings
EPA rates the 2018 Porsche Cayman at 21–25 mpg combined across 6 versions. NHTSA lists 2 safety recalls and 1 owner complaint for this model year.
Safety recalls
2
EPA combined mpg
21–25
NHTSA overall rating
—
Recall file dated Oct 27, 2026 · EPA file dated Sep 29, 2026 · updated Oct 27, 2026, 7:34 AM EDT
NHTSA lists this vehicle as 718 CAYMAN.
Check your own car: enter your 17-character VIN at nhtsa.gov/recalls to see open recalls for that exact vehicle, and contact a Porsche dealer to schedule the repair — safety recall repairs are free. The list below covers the whole model year, so not every recall applies to every car.
2018 Porsche Cayman recalls
NHTSA's recall file lists 2 safety recalls for the 2018 Porsche Cayman, newest first.
Air bags
NHTSA 19V179000Reported Mar 6, 2019
Filed by
Porsche Cars North America, Inc. (manufacturer recall no. AKA4)
Units affected
417 (estimate)
Problem
Porsche Cars North America, Inc. (Porsche) is recalling certain 2018 718 Boxster, Boxster S and Boxster GTS, 718 Cayman, Cayman S and Cayman GTS, 911 Carrera, Carrera T, Targa 4 GTS, Carrera 4, Carrera S, Carrera 4S, Carrera GTS, Carrera 4 GTS, Carrera Cabriolet, Carrera S Cabriolet, Carrera 4S Cabriolet, Carrera GTS Cabriolet, Carrera 4 GTS Cabriolet, Targa 4, Targa 4S, Turbo, Turbo S, Turbo S Exclusive Series, Turbo Cabriolet, Turbo S Cabriolet and GT3 vehicles. The side air bag impact sensors may not have been properly tightened to the vehicle.
Risk
In the event of a crash, the air bags may not deploy, increasing the risk of injury.
Remedy
Porsche will notify owners, and dealers will tighten the air bag sensors, as necessary, free of charge. The recall began May 17, 2019. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AKA4.
Porsche Cars North America, Inc. (manufacturer recall no. AKA3)
Components
Structure; Fuel system, gasoline
Units affected
14,388 (estimate)
Problem
Porsche Cars North America, Inc. (Porsche) is recalling certain 2017-2019 718 Boxster, 718 Boxster S, 718 Cayman and 718 Cayman S vehicles and 2018-2019 718 Boxster GTS and 2018-2019 718 Cayman GTS vehicles. In the event of a crash, a crossmember may detach from the luggage compartment bracket, possibly causing a fuel leak.
Risk
A fuel leak in the presence of an ignition source can increase the risk of fire.
Remedy
Porsche will notify owners, and dealers will secure the crossmember with additional rivets, free of charge. The recall began April 19, 2019. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AKA3.
Recall summaries are written by NHTSA from manufacturers' defect reports. Dates are when NHTSA received the report.
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2018 Porsche Cayman fuel economy by version
EPA city/highway/combined estimates for each engine, transmission and drive combination. Annual fuel cost is EPA's estimate for 15,000 miles a year (55% city, 45% highway) at EPA's current fuel-price assumptions; your cost will vary.
Source: FuelEconomy.gov (U.S. DOE and EPA), file dated Sep 29, 2026. Each version links to its FuelEconomy.gov record.
EPA estimates come from standardized lab tests so cars can be compared fairly; real-world mileage depends on speed, weather, load, tires and driving style.
2018 Porsche Cayman crash-test ratings
NHTSA 5-Star Safety Ratings for the tested versions. More stars mean a lower chance of serious injury in that type of crash. Rollover risk is NHTSA's estimated chance of rolling over in a single-vehicle crash.
2018 Porsche Cayman NHTSA 5-Star Safety Ratings
Tested vehicle
Overall
Frontal
Side
Rollover
Rollover risk
Forward collision warning
2018 Porsche 718 Cayman 3 HB RWD
Not rated
Not rated
Not rated
Not rated
—
No
2018 Porsche 718 Cayman S 3 HB RWD
Not rated
Not rated
Not rated
Not rated
—
No
Source: NHTSA 5-Star Safety Ratings (New Car Assessment Program), checked Oct 26, 2026.
Star ratings compare vehicles of similar size and weight; a frontal rating for a large pickup is not directly comparable with one for a small car.
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2018 Porsche Cayman owner complaints
Owners have filed 1 complaint with NHTSA about the 2018 Porsche Cayman, most recently on Oct 16, 2026. 0 mention a crash, 0 a fire, 0 injured people and 0 deaths. These are unverified reports; a complaint is not proof of a defect.
Most-cited components in 2018 Porsche Cayman complaints
Component named in complaints
Mentions
Power train
1
Suspension
1
Source: NHTSA consumer complaint files (complaints received since January 1, 2015). One complaint can name several components.
