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991 · Convertible

2015 Porsche 911

Common problems & what to know before you buy

Before you message the seller, know the documented failure patterns, repair cost exposure, and risk level for the 2015 Porsche 911.

Common problems

What to watch for on the 2015 Porsche 911

major

GT3 Engine Fire Risk (2014)

Early 991 GT3s had a connecting rod bolt failure that could cause engine fire. Porsche recalled all 2014 GT3s and replaced engines. Check that the recall was performed.

Typical repair cost
$0 (recall)
caution

PDK Mechatronics Unit

PDK transmission mechatronics can develop faults causing harsh shifts or limp mode. Often repairable without full transmission replacement. Regular PDK fluid changes (every 40k-60k miles) are crucial.

Typical repair cost
$2,000-4,000

2 more known problems on the 2015 911

Your guide shows all of them and which apply to the exact car, and what to ask the seller.

Market pricing

2015 Porsche 911 price ranges

2012-2015 Carrera (991.1)$55,000-70,000
2016-2019 Carrera (991.2)$70,000-85,000
2014-2019 Turbo S$130,000-180,000
2014-2019 GT3$120,000-180,000

The 991.2 Carrera with twin-turbo is the sweet spot. The 991.1 Carrera offers the last naturally aspirated base 911. GT3 and Turbo S hold value exceptionally well. PDK is the majority choice.

Safety record

Recalls on the 2015 Porsche 911

Recall·14V698000

Latches/locks/linkages: latch

Porsche Cars North America, Inc.

Source: NHTSA

Specifications

2015 Porsche 911 at a glance

Trims
CarreraCarrera 4Carrera 4 GTSCarrera 4SCarrera GTSCarrera SGT3Targa 4
Engine
3.4L Flat-6, 3.8L Flat-6, 3.8L Flat-6 Turbo
Transmission
Manual 7-spd, DCT 7-spd
Drivetrain
RWD, AWD
Fuel
Gasoline
Body style
Convertible
991 guide

Porsche 911 (991) Buyer's Guide

The Modern Performance Benchmark

The 991 (2012-2019) was a ground-up redesign that made the 911 bigger, more powerful, and more capable than ever. It's the first 911 with a fully electronic steering rack and the first with a 7-speed manual. The 991 is the benchmark modern sports car.

Powertrain: The 3.4L DFI flat-six (350 hp, Carrera 2012-2015) or 3.0L twin-turbo (370 hp, Carrera 2016-2019) with 7-speed manual or 7-speed PDK. The Carrera S has 400-420 hp. The Turbo/Turbo S (520-580 hp) with PDK only. The GT3 (475 hp, 2014-2019) has the legendary 4.0L naturally aspirated flat-six and PDK only. The GT3 RS (500-520 hp) is the track weapon. The 2016 refresh (991.2) switched to twin-turbo for all Carrera models.

What to look for: The 991.2 Carrera's twin-turbo engines have proven reliable. The PDK is excellent. The 7-speed manual's reverse gear position takes getting used to (left and up). GT3 engine failures (2014) were addressed under warranty. The 991 is the sweet spot in modern 911s — fully modern, before the 992's weight gain.

Generation

About the 991

The 2012-2019 Porsche 911 (991) is the seventh generation of the 911, featuring a larger, wider body and an entirely new platform. It was powered by a 3.4-liter or 3.8-liter naturally aspirated flat-six in the Carrera models and a 3.0-liter twin-turbocharged flat-six in the Carrera S after the 2016 mid-cycle update. The Turbo and Turbo S received a 3.8-liter twin-turbocharged engine producing 540 to 580 horsepower. Transmissions included a seven-speed manual and a seven-speed dual-clutch PDK. Rear-wheel drive was standard, with all-wheel drive available on Carrera 4 models. Body styles included a coupe, cabriolet, and Targa.

The 991 introduced a longer wheelbase and a wider front track compared to the 997, improving stability and interior space. It was the first 911 to use an eight-speed PDK in later models and the first to offer electric power steering, a change that generated mixed reactions from driving purists. The subsequent 992 generation further increased the body size and added a mild-hybrid system to certain models.

For used buyers, the 991 offers a refined, powerful, and technologically advanced 911 that still retains excellent driving dynamics. The naturally aspirated engines in pre-2016 models are highly regarded for their throttle response and sound, while the turbocharged 3.0-liter engines in later cars offer greater torque and efficiency. The PDK transmission is excellent, and the manual transmission is increasingly valued by enthusiasts. This generation is suitable for buyers who want a modern, daily-drivable 911 with a broad range of models from the entry-level Carrera to the track-focused GT3.

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FAQ

Frequently asked questions

991 vs 992?

The 992 is bigger, heavier, and more capable. The 991 is the last 911 that feels truly athletic and analog-esque. The 991 also costs $20,000-40,000 less. Most enthusiasts prefer the 991's character.

Should I buy PDK or manual?

The PDK is faster and better in traffic. The manual is more engaging and will hold value better. The 7-speed manual is good but the PDK is one of the best transmissions ever made.

Squeezed is a buyer guide based on public data and industry patterns, not a mechanical inspection. Always get a professional pre-purchase inspection before you buy.