The 991 (2012-2018) is the chassis that bridges the modern Porsche 911 — longer wheelbase, electric power steering, and a clean split between two sub-generations whose engine choice fundamentally defines the ownership experience. The 991.1 (2012-2015, plus the GTS through 2016) is the LAST naturally-aspirated Carrera generation — the 3.8L X51 GTS engine has 'no OPF/GPF, no RPMxDb limiting, no forced cylinder deactivation… just Porsche engineering at its best', and the community now treats this as the end of the late-modern analog era. …
Library / Porsche
Porsche 911 (991)
343 sales analyzed · 11 topics from real Bring a Trailer & Cars & Bids comments.
“That 3.8L X51 is a brilliant motor, no OPF/GPF, no RPMxDb limiting, no forced cylinder deactivation etc etc… just Porsche engineering at its best.”mRI · Sep 27, 2025 at 6:07 AM
- 991.1 vs 991.2 — turbo transition, with GT exceptionsfactory-specThe 991.1 (2012-2015 / 2016 for GTS) uses naturally-aspirated 3.4L (Carrera) and 3.8L (S/GTS) engines. The 991.2 (2017-2018) replaced the Carrera and Carrera S engines with a 3.0L twin-turbo. …
- 991.1 GTS — last NA Carrera, manual is the collector specfactory-specThe 991.1 GTS (2015-2016) is the configuration the community keeps cycling back to as the structural collector entry into 991. 'Extremely difficult to find a clean 991.1 GTS, especially one with 3 pedals'. …
- 991.2 GT3 Touring — the manual halo with 156 US carsfactory-specThe 991.2 GT3 Touring is the manual-only, wingless GT3 — just 156 US examples. Late-2025 market re-rated sharply: average MSRP markup went from high-20s percent to high-40s, with the $435k spike sale acting as a market anchor. …
- 991.1 Turbo / Turbo S market — 61 BAT auctions, median $118-127kvalue-and-marketComprehensive 991.1 Turbo S market data from BAT and Classic.com (compiled by Fleche_dOr): 61 all-time BAT auctions, average $128,316, median ~$127k. Highest non-modified sale: $165k (2022); Gemballa-modified high $198k (2023). …
- DME over-rev interpretation — Zone 1 brief vs serious damagemechanicalDME over-rev report is the dominant 991 PPI item. The interpretation calibration: a single brief Zone-1 (lowest zone) over-rev — sub-half-second near the soft limiter — is among the cleanest reports possible even for PDK automatics. …
- Known 991 gremlins — cosmetic, not powertrainmechanicalThe recurring 991 issues are non-powertrain: (1) door cards separate from the frame near the top because of environmentally-friendly glue Porsche was forced to use — older 991s (early 2012-2013) worst; (2) the brake light housed in the deployable rear spoiler fails because of a brittle plastic connector; (3) older 991 headlights are prone to cracking; (4) front lip spoilers are consumables — $275 from Suncoast, DIY in minutes ('about the only Porsche part that can be described as cheap'). 991 spark plugs rated 40k miles often last 60k+; brake fluid still needs the 2-year flush regardless of mileage (moisture wicking). …
- Manual transmission premium — the dominant valuation driverdrivetrainManual transmission is the single biggest premium driver across 991 generations. On the 991.1 Turbo S, the rule of thumb: 'Third pedal it sells closer to $200k. …
- PTS color premiums and the 'when PTS meant something' erapaint-and-bodyPTS (Paint-to-Sample) on 991 is a $17k option that commands meaningful premiums when applied to halo cars. Linden Green (which a former Porsche dealership sales manager calls 'Chartreuse', referencing a 1973 Carrera RS match) on the 991.2 GT3 Touring is 1-of-1 in the US. …
- PCCB and PPF — preservation economicsmechanicalPCCB ceramic brake rotors have factory-stamped minimum thicknesses (front: 33.7mm min on 2005 spec; varies by model year) — measurable wear life is concrete and disclosable. Full Paint Protection Film (PPF) is widely applied and well-regarded for preserving condition without visually intruding ('it took me a minute to even realize it had ppf'). …
- GTS positioning — original RWD widebody, then C4 added under dealer pressurefactory-specHistorical context for the GTS line: originally intended as a rear-wheel-drive widebody with power bump (a unique spec — even the GT3 of the time was narrow-body). Porsche added the Carrera 4 GTS option hastily after cold-weather northern dealers complained they couldn't sell RWD-only. …
- Ride quality — GTS 'cinder block' stiffness softened by DSC PASM controllermechanicalOwners describe the standard GTS suspension as a 'cinder block ride'. A community-validated retrofit is the DSC PASM controller — adds adjustability and meaningfully softens the ride without sacrificing handling. …