Porsche 911
991.1
(2012–2016)Performance— 4 options
Adds Sport and Sport Plus driving modes, dynamic engine mounts (PADM) that stiffen under cornering loads, and a dashboard-mounted stopwatch on the 991.1. On PDK cars, Sport Plus mode enables launch control. Standard on the 991.1 GTS. This is the single most resale-critical option on the 991.1; cars without Sport Chrono are materially harder to sell and typically trade at a discount versus equivalently specified examples with it.
Switchable sports exhaust with bypass valve, allowing the driver to toggle between a subdued and fully open exhaust character. On the 991.2, the bypass valve is electronically controlled and integrates with the driving mode selector. Transforms the flat-six soundtrack considerably in open mode. Optional across both generations; the PSE code on the 991 is 176, distinct from the XLF code used on the 997 range.
Factory performance upgrade for the 991.1 Carrera S and 4S only, raising output to 316 kW through revised intake, exhaust, and engine calibration. The X51 on the 991.1 includes PSE and Sport Chrono in its bundle. Available on 991.1 only — the 991.2 introduced a new engine (turbocharged) making an equivalent Powerkit unnecessary. Factory documentation is traceable through Porsche's central vehicle data system.
7-speed dual-clutch gearbox, available on all 991 Carrera variants. Enables launch control when paired with Sport Chrono, and shifts faster than any manual. Standard on the Turbo S. Well-proven and reliable across the 991 generation; service intervals are normal and no significant issues are reported on UK cars.
Chassis— 9 options
Factory ceramic composite brakes with yellow calipers. Standard on the Turbo S; optional on all other variants. Replacement ceramic discs and pads can exceed £10,000–£20,000 per set — thoroughly inspect the disc vanes for crack propagation before purchase. Many UK buyers prefer iron brakes with red calipers for lower running costs; PCCB examples command a premium for track use but represent a liability on worn high-mileage road cars.
Electronically controlled rear differential replacing the mechanical PTV, available on PDK-equipped cars. The electronic unit responds faster than a mechanical LSD and integrates with PASM and Sport Chrono for a holistic chassis management effect. Standard on the GT3 and Turbo; optional on S, 4S, and GTS with PDK. Highly desirable for both track and spirited road use.
Four-wheel steering system steering the rear wheels opposite to the front below approximately 50 km/h (increasing effective wheelbase for agility) and same-direction above approximately 80 km/h (adding stability). Provides up to 2.8° of rear steering angle. On the 991.1, standard only on GT3 and Turbo from MY2014. On the 991.2, newly optional on Carrera S, 4S, and GTS. Cannot be retrofitted. One of the highest-impact chassis options available on the 991.2 for everyday driver feel.
Lowers ride height by approximately 20 mm with firmer springs and stiffer anti-roll bars versus the standard PASM setup. Available on S, 4S, and GTS variants. Gives a more aggressive stance and sharper turn-in, at the cost of ride comfort on the UK's variable road surfaces. A popular option for buyers who prioritise handling response over ride quality.
Active hydraulic anti-roll bar system that stiffens the relevant axle's anti-roll bar under cornering loads, dramatically reducing body roll while maintaining ride quality over straight-line bumps. Optional on S and above; standard on Turbo S. Works in concert with PASM. The combined PDCC and PASM Sport Suspension package is coded 031 and is the most comprehensive chassis option available on the 991.
Combined package of PDCC active anti-roll bars and the sport-lowered PASM Sport Suspension (−20 mm). The most comprehensive chassis setup available on the 991, providing maximum body control, minimum ride height, and the sharpest handling response. A significant upgrade for track-focused buyers, though the ride on urban UK roads is notably firm.
Mechanical limited-slip differential with brake-based torque vectoring, available on cars with the manual gearbox. Improves traction and cornering balance by biasing torque toward the outside rear wheel. Optional on S, 4S, and GTS. PDK-equipped cars use PTV+ (221) instead. A meaningful upgrade for rear-wheel-drive buyers seeking more neutral handling and rotation.
Electronically controlled adaptive dampers. Optional on the base Carrera 991.1; standard on the Carrera S and above on the 991.1. Critically: standard on ALL 991.2 variants regardless of specification — so the code will not appear on a 991.2 build sheet as an option. For 991.1 buyers, PASM is a meaningful distinguishing factor on base Carrera examples. The 991.2 PASM Sport Suspension (030) is the relevant search item for chassis enthusiasts on that generation.
A no-cost option on the GT3 and GT3 RS, deleting the rear seats (where applicable) and adding a steel roll cage, manual fire extinguisher, and six-point harness preparation. Standard on the GT3 RS. Primarily relevant to track-day buyers; the roll cage changes the structural character of the car and does not have a simple delete option. Buyers purchasing a non-Clubsport GT3 should be aware this may limit FIA homologation for certain club racing events.
Wheels— 2 options
Optional 20-inch Carrera Classic alloys in a traditional 5-spoke design. Available across both generations. A timeless choice that works well with both standard and lowered suspension setups.
Optional 20-inch SportDesign alloy wheels on the 991.1 with a more aggressive multi-spoke appearance. Typically specified on sporting builds alongside the Aerokit Cup or SportDesign front apron.
Exterior— 4 options
Factory custom paint outside the standard colour range, documented and warranted by Porsche. PTS 991s command a meaningful resale premium for desirable colours but repainting or repairing PTS finishes is substantially more expensive. Always verify the colour code against Porsche's central vehicle data records.
Bi-xenon HID headlights with Porsche Dynamic Light System cornering function. The top lighting option on the 991.1 and a lower-tier option on the 991.2 (where the LED PDLS+ 602 is the superior choice). A meaningful improvement over the base halogen units for rural UK driving.
Electric panoramic glass roof spanning most of the coupe roofline. First Porsche 911 generation to offer a panoramic option. Adds significant light to the cabin without the weight penalty of a folding roof. Check the motor and seals on older examples; panoramic roof mechanisms can develop rattles or slow operation.
Smaller conventional electric sliding glass panel, an alternative to the full panoramic roof. Less visually dramatic than 653 but lighter. A straightforward option for buyers who want occasional ventilation without the full panoramic experience.
Interior— 12 options
18-way electrically adjustable adaptive sport seats with integrated memory and automatic side bolster adjustment linked to driving mode selection. Also coded 323/324 in some references. The most comprehensive standard-format seat on the 991; side bolsters automatically firm under Sport Plus mode when paired with Sport Chrono. Highly desirable on performance-biased 991 purchases.
Foldable-backrest lightweight sport bucket seats with a wider shell than the fixed P11 units, making them more suitable for daily driving while still providing significant lateral support. Also coded 388/389. Standard on the GT3 RS; optional on GT3. These are wider and more accommodating than the P11 fixed-back carbon buckets, and are generally the recommended bucket seat for buyers who use their car on the road as well as the track.
14-way electrically adjustable sport seats with multiple memory positions. Also coded as 321/322 in some references. A popular mid-spec seat choice offering good support and comprehensive adjustment, typically paired with a heated seat option. Well-preserved on most UK cars.
Extended leather coverage throughout the interior beyond the standard specification. The 991-generation full leather option is coded 981, distinct from the 996/797 codes used on previous generations. Elevates the interior quality meaningfully and adds resale value on well-specified examples.
Entry-level electric seat adjustment package adding 4-way powered movement. A step above the base manual sport seat. The lowest-tier electric seat option on the 991.
Factory heated front seats. A standard winter comfort inclusion on UK-market cars. Absence is a genuine daily-use detractor in British conditions.
Factory-specified contrasting two-colour leather scheme across seats, dashboard, and door cards. Commands a premium on the used market for desirable colour combinations.
Alcantara suede-effect headliner. Standard on GTS. A popular inclusion on more highly specified 991s, giving a race-inspired cabin finish. Check for fading or staining.
Factory carbon-fibre interior trim package across dashboard, door inserts, and centre console on the 991.1. Code EEG/EEH on 991.1; becomes EKG/EKH on 991.2. A popular performance aesthetic that pairs naturally with bucket seats and Sport Chrono on track-focused builds.
Factory ventilated front seats with integrated fans drawing air through the seat leather. Less essential for UK driving conditions than for warmer climates, but a valued comfort option on higher-specification cars.
Factory seat belts in Guards Red. The most popular coloured belt option on the UK used market, adding period character without requiring a full interior colour change.
Factory seat belts in Racing Yellow. Typically specified on Racing Yellow or Speed Yellow exterior cars for colour-matched specification.
Technology— 7 options
Burmester high-end audio system on the 991.1 — the first Boxster/Cayman/911 generation to offer Burmester over Bose as the top audio tier. Code changes to 9VJ on 991.2. The Burmester system provides a noticeably higher audio quality than Bose, particularly in detail retrieval and soundstage. A sought-after option on higher-spec 991.1 examples.
Porsche Communication Management with integrated navigation. 991.1 used PCM 3.1 — no Apple CarPlay native support; a PCCM+ retrofit (approximately £1,200–£1,500 through Porsche) can add modern connectivity. The 991.2 upgraded to PCM 4.0 with a touchscreen and was the first 911 generation to support Apple CarPlay natively. PCM version is a significant practical consideration for daily use buyers.
Bose 9-speaker surround sound system on the 991.1. Code changes to 9VL on the 991.2. A meaningful audio upgrade over the standard system. Generally reliable.
Radar-based adaptive cruise control maintaining a set distance to the vehicle ahead. Not available on the 997. A significant motorway driving aid for longer journeys; absence is increasingly noted by UK buyers accustomed to modern driver assistance.
Passive keyless entry and push-button start, unlocking the car as the key approaches and allowing the engine to be started without inserting the key. A popular convenience option on UK-market cars.
Rear ultrasonic parking sensors. A practical baseline proximity aid — note that no factory reversing camera option existed on the 991.1; the camera became available only with code 638 on the 991.2.
Front and rear ultrasonic parking sensors. Adds front proximity monitoring to the standard rear-only setup. Useful given the 911's limited frontal visibility from the driver's seat.
Option availability varies by variant and model year. SA codes are factory order codes — verify against a Porsche Certificate of Authenticity (COA). Listing counts update in real time.
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