What are the most common Porsche 911 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Porsche 911 has 9 documented issues. The most frequently reported are: Windshield and Rear Window Bonding Failure (Recall 24V-155 / ARA3), Center-Lock Wheel Bolt Fracture on Center-Lock-Equipped 992 Models (Recall 24V-809 / ARC4), GT3 4.0L Oil Tank Threaded Insert Separates When the Drain Plug Is Loosened. Of these, 2 are rated critical and should be addressed promptly.
Is the Porsche 911 reliable?
The 2021 Porsche 911 has 9 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Windshield and Rear Window Bonding Failure (Recall 24V-155 / ARA3) and Center-Lock Wheel Bolt Fracture on Center-Lock-Equipped 992 Models (Recall 24V-809 / ARC4). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Porsche 911 problems?
Repair costs for known Porsche 911 issues range from $0 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Windshield and Rear Window Bonding Failure (Recall 24V-155 / ARA3), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2020-2024 Porsche 911 Windshield and Rear Window Bonding Failure (Recall 24V-155 / ARA3)?
Porsche's Part 573 report for recall 24V-155 states that on affected 992-generation 911s "the front and rear windows were not manufactured in accordance with the specifications and therefore not bonded sufficiently to the body." The root cause was a supplier cleaning-process erro… Repairs typically run $0-$0. Severity: high.
What is the 2021-2024 Porsche 911 Center-Lock Wheel Bolt Fracture on Center-Lock-Equipped 992 Models (Recall 24V-809 / ARC4)?
NHTSA recall 24V-809 covers 2021-2024 Porsche 911s (alongside 2024 718 Cayman GT4 RS and Spyder RS and the 2025 Panamera) in which "the center lock wheel bolt may fracture and cause the wheel to detach." A batch of center-lock nuts was manufactured out of specification. This is s… Repairs typically run $0-$0. Severity: high.
What is the 2021-2022 Porsche 911 GT3 4.0L Oil Tank Threaded Insert Separates When the Drain Plug Is Loosened?
Porsche Technical Information 96/22 ENU 1752 applies specifically to the 911 GT3 (992) and 911 GT3 with Touring Package (992), model years 2021 through 2022. On cars built before 27 January 2022 (engine number DRM 004177), "it is possible for the threaded insert, into which the o… Repairs typically run $150-$3,500. Severity: medium.
What is the 2021-2022 Porsche 911 PASM "Chassis System Fault" from Body Acceleration Sensor Initialization Error?
Porsche Technical Information 213/21 ENU 4316 applies to the 911 (992) for model years 2021 through 2022. The yellow warning message "Chassis system fault" is displayed in the instrument cluster and one or more of the following entries are stored in the PASM control unit: C10B804… Repairs typically run $0-$350. Severity: medium.
What is the 2020-2026 Porsche 911 8-Speed PDK Transmission Oil Leaks?
Porsche Technical Information 88/20 ENU 3734, "Complaint - Oil Leaks on Double Clutch Transmission (Porsche Doppelkupplung PDK)," covers the 911 Carrera (992) from model year 2020 with the 8-speed automatic transmission (I-no. G1F) and the 8-speed all-wheel-drive transmission (I-… Repairs typically run $400-$4,000. Severity: medium.
What is the 2020-2026 Porsche 911 12V Lithium-Ion Lightweight Battery Component Protection De-Energizes the Car and Is Misdiagnosed as a Dead Battery?
Porsche Technical Information 31/20 ENU 2706, "Diagnosis and Handling of 12-Volt Lithium-Ion Battery (On-Board Battery)," covers the 911 Carrera (992) alongside the Cayenne and Taycan and applies to cars fitted with the lightweight lithium battery (I-no. J2A). Porsche wrote the b… Repairs typically run $0-$1,800. Severity: medium.
What is the 2020-2022 Porsche 911 Connect Control Unit Drains the 12V Battery Flat in Three to Four Days (PVTS Alarm Loop)?
Porsche Technical Information 177/20 ENU 9125 applies to the 911 Carrera (992) from model year 2020 and concerns the Connect control unit (external communication control unit). Porsche's symptom description is precise: with the Porsche Vehicle Tracking System (PVTS) activated, "a… Repairs typically run $0-$400. Severity: medium.
What is the 2020-2021 Porsche 911 Upper Oil Pan Seal Housing Leak from Injection-Molding Flash?
Porsche Advanced Technical Information bulletin 2118.1 (Part ID 1750), "992-Upper Oil Pan Seal Housing Leak," covers 911 (992) vehicles up to model year 2021. The complaint is an oil leak from the rear engine area with no relevant fault codes stored, and the bulletin notes the le… Repairs typically run $600-$2,200. Severity: medium.
What is the 2020-2026 Porsche 911 Front-Axle Lift "Lift System Fault - Service Necessary" and Height Measurement Error?
Porsche Technical Information 40/21 ENU 4381 covers 911 Carrera (992) cars from model year 2020 fitted with the front-axle lift function (M-no. 2UH). The white warning message "Lift system fault - Service necessary" appears in the instrument cluster and the entry "C1365F8 - Measu… Repairs typically run $200-$3,000. Severity: low.
