2016 Porsche 911 Targa 4 GTS

The 991 Targa roof mechanism is generally regarded as reliable — particularly on your 2016 991.1 model. Here’s what you should know:

The Good News

Independent Porsche specialists consider the 991.1 (2014–2016) “largely unproblematic” regarding the roof mechanism. Owner reports back this up — most long-term owners report zero mechanical issues even after years of regular use. The mechanism is complex (it’s a power-operated glass rear section that motors over the signature roll hoop), but it’s well-engineered.

What to Watch For

• Water ingress — The most common issue isn’t mechanical failure, but clogged drain tubes. Your Targa has four drain tubes at the rear corners of the glass panel that need periodic cleaning. If they clog, water can back up into the cabin (and potentially affect electrics).
• Seal degradation — At 10 years old, rubber seals can dry out. One owner reported a seal replaced under warranty, but this is age-related, not mileage-related.
• Battery voltage — If the car sits without a trickle charger, low voltage can occasionally throw roof fault codes. Easy fix: keep it on a tender.

Your Specific Car

This 2016 model with only 13,981 miles and “Original & Highly Original” status is in a sweet spot. The 991.1 benefits from any early-production fixes, and such low mechanical wear means the roof has likely seen minimal cycles. The 2016 model year sits at the end of the 991.1 run when everything was sorted.

If I were considering this car, I’d ask the seller when the drain tubes were last cleaned and inspect the rubber seals around the glass panel — but the mechanism itself isn’t a cause for concern.

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