The glue holding those panes in place may let loose if you take the 755-hp coupe over 96 mph (155 km/h)
The recall only affects the hard-top 765LTs and their polycarbonate rear windows, which could detach from the vehicle, making it a danger to anyone or anything in the surrounding area, and also increasing the risk of a crash. According to documents provided to the National Highway Traffic Safety Administration (NHTSA), the problem stems from the adhesive that may “de-bond” and, in certain circumstances, let the rear cabin window detach from the support frame.
McLaren notes that in regular road conditions, the windows flying off shouldn’t be a problem. However, when driven at high speeds with the window down, or on a track, it is more likely—think around the 96-mph (155-km/h) mark. Also noted in the recall report: “McLaren cannot rule out, as a possible contributory factor, potential non-compliance to the specified bonding process during the production of the polycarbonate panels.”
One possible identifier your car might be affected – for those who happen to own a 2021 McLaren 765LT coupe – is a rattling noise inside the cabin, which could be a partial de-bonding of the rear window to the support frame.
McLaren will notify owners by mail and advise them to take the vehicle to have “bespoke” fasteners placed in each corner of the pane, free of charge. The automaker says if you can’t wait that long, a temporary fix can be made sooner, so you can get out on the track before having the remedy completed: McLaren can simply apply additional adhesive to reinforce the panel.
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