What 60 owners told NHTSA about the 2017 Porsche Macan Gts

It was noted there is fogging, spiderweb type cracks, and discoloration on the inside of each headlight lens. It was discovered through conversations at the dealership and online research that a chemical reaction between the factory lens coating and the gas emitted by the headlight bulbs was the likely cause. Lumen output has gradually decreased as the issue grows worse and both lenses become more opaque in appearance. The car is available for inspection. We are asking NHTSA to investigate this issue for the following reasons: 1) This is a growing safety issue as lumen output is steadily decreasing 2) This is unrelated to regular service/maintenance or any culpability on behalf of the owners 3) Absent replacement, this issue cannot be corrected by the owners 4) It has been reported to be a growing issue among numerous Porsche Macan owners. I asked Porsche if it was covered under the warranty, they stated it was not. They did examine the car. No warning messages.

NHTSA ODI 11544727

Vehicle was driven to Porsche of Arlington (Virginia) for warranty service and a Virginia safety inspection. Service advisor reported that safety inspector informed him the vehicle passed inspection; however, it was noted there is fogging, spiderweb type cracks, and discoloration on the inside of each headlight lens. It was discovered through conversations at the dealership and online research that a chemical reaction between the factory lens coating and the gas emitted by the headlight bulbs was the likely cause. Lumen output has gradually decreased as the issue grows worse and both lenses become more opaque in appearance. Porsche of Arlington advised us the factory warranty had expired, as we had expected. They completed a thorough inspection of the headlight assemblies, took photos at the dealership, and further suggested we contact Porsche Cars North America to file a claim to ascertain whether a remedy could be made under 'good will' as this is undoubtedly a safety issue. Porsche Cars North America responded via e-mail and advised us that 'customer safety and satisfaction is our top priority.' They assigned a case number and informed us we would be hearing from a representative for additional information. After several weeks of phone calls, Porsche Cars North America determined that no 'good will' would be provided as this issue involves/is related to the vehicle's glass/lens and therefore excluded from any adjustments or consideration from Porsche Cars North America. We are asking NHTSA to investigate this issue for the following reasons: 1) This is a growing safety issue as lumen output is steadily decreasing 2) This is unrelated to regular service/maintenance or any culpability on behalf of the owners 3) Absent replacement, this issue cannot be corrected by the owners 4) It has been reported to be a growing issue among numerous Porsche Macan owners 5) We have exhausted our options with the dealership and Porsche Cars North America

NHTSA ODI 11523110

THE CAR WAS PARKED IN THE GARAGE AND THE PANORAMIC ROOF WAS SUDDENLY SHATTERED WHILE I START TO DRIVE THE CAR ABOUT HALF MILE. AT FIRST, I THOUGH IT LOOKS LIKE IT WAS FROZE BUT THE GLASSES START TO FALL APART. THE CAR IS NEW, I JUST BOUGHT IT FOR 3 WEEKS WITH 700 MILES ON IT. NO STONES OR ROCKS EVER HIT THE SUNROOF.

NHTSA ODI 11040800