The Senna being part of this recall caught our eye, since so few of those will ever be sold. McLaren says that 157 Sennas will be subject to recall. As for the issue itself, the fire risk stems from an NVH foam pad that is placed underneath the fuel tank. McLaren says there is a possibility that this pad collects and retains corrosive moisture from the environment while driving. Over time, this could corrode the surface of the fuel tank where the pad is in contact with it. Those “micro-porations” in the fuel tank could trigger the release of gas vapor or fuel liquid. McLaren says this wouldn’t immediately cause a fire, because the fuel would be exiting into a “cool part of the vehicle” (not the exhaust or powertrain). However, fuel could ultimately leak onto the ground under the vehicle, increasing the risk of a fire under the car.
McLaren says it first learned of the issue from a Latvian customer who claimed to smell fuel coming from his 570GT. The customer’s car was a former press car, “subjected to high mileage, wear and tear and greater range of road conditions than a typical vehicle of the same type and age.” Yeah, we can attest to that. After another similar complaint from a UK customer, McLaren opened an investigation, and this recall is the result.
To fix the 720S, Senna and 570GT, dealers will be removing the NVH pad from the car and inspecting all the gas tanks for corrosion. If McLaren deems it necessary, the fuel tank will be replaced. As of now, that NVH pad is just being removed from the car with no replacement part. McLaren hasn’t specified a remedy for the McLaren GT yet, suggesting that something else is going on there. McLaren also states that there is no defect in the design or the materials used in the fuel tank. The foam pad is the potential issue here.
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