Summary
The Porsche 918 Spyder has 11 recalls, all affecting the 2015 model year, with the most serious being multiple control arm defects across both the front and rear suspension where arms can crack or break and cause the driver to lose steering control. Because all 11 recalls cover only the 2015 model year, every one of them is relevant to any owner of this vehicle.
The suspension concerns are the most widespread issue in the recall history. At the rear axle, control arm connecting shafts can crack due to stress corrosion, and separately, rear longitudinal and transverse control arms may not meet strength specifications and can break outright, either condition reducing the driver's ability to control the vehicle. At the front axle, lower control arms can crack at the ball joint, and front control arms more broadly may also fail to meet specifications and break. The common consequence across all of these is a sudden loss of handling that can result in a crash.
There is also a fire risk on 2015 models: the wiring harness for the left rear radiator fan can rub against a carbon fiber heat insulation plate, chafe through its insulation, short electrically, and start a fire.
The remaining two recalls both involve seatbelt anchor points and trace back to a service procedure error. If the seatbelt mount or reel attachment bolts were removed during prior service work and reinstalled in the wrong locations or replaced with incorrect fasteners, the anchor points can weaken and the belts may not hold in a crash.