Owners have filed 5 complaints with NHTSA about this car, most about the fuel system. The 8 checks below target those problems, in the order you would do them at the car.
2021One recall on this model year told owners to stop driving until the repair was done.
Do not buy until you have dealer paperwork or a recall lookup showing it was completed for this VIN.
Tick items off on your phone at the car, or print it. Ticks stay on this device.
0/8 checked
2021 Porsche 911: inspection sheet
Before you go, or before you touch the car0/4
Ask the seller not to warm the car up first0/3
At least 20 minutes, with some highway0/1
These checks are specific to this model year. For tires, body panels, fluids, and the other basics every used car needs, use the general inspection guide.
These years share the 2021's design and most of its parts, so their problems are the ones to look for on this car too.
Worth adding to your 2021 checks
EPA figures for each version of the 2021 Porsche 911. Use them to confirm you are looking at the version that was advertised, and as a yardstick on the test drive.
| Version | Drive | EPA rating |
|---|---|---|
| 3.0L 6-cyl | AWD, RWD | 20–21 mpg |
| 3.7L 6-cyl | AWD | 17 mpg |
NHTSA complaints for the 2021 Porsche 911, grouped by the part owners named. Open a row to read what goes wrong.
Fuel line failures in the engine compartment are the most serious pattern. Fuel leaks onto hot engine parts, and some cars have failed more than once. One of the three complaints describes a fire at the rear of the car shortly after startup. Other reports describe fuel injector electrical faults that turn on the check engine light, make the engine run rough, and bring up reduced power warnings. A software update does not always clear these faults. Fuel line repairs reportedly require removing the engine and transmission, so the car can spend weeks in the shop. No mileage pattern shows up in the reports.
Complaints for this year next to the average for the other model years, area by area.
The 2021 ranks second for owner complaints among 6 911 years, close to the average of the others. Newer years have had less time to collect complaints, so compare like with like.
Redesigns and mid-cycle updates change what can go wrong.
The 2021 is the second model year of the 911's eighth generation (2020–2023).
Porsche updated the 911 for 2024, so a 2021 does not have those changes.
What changed for 2024 (not on a 2021)
Recall repairs are free at any Porsche dealer, but the seller may never have had them done. Check each campaign number against the VIN.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2025 Panamera, 2024 718 Cayman GT4 RS, 718 Spyder RS, and 2021-2024 911 vehicles. The center lock wheel bolt may fracture and cause the wheel to detach.
Risk: Wheel detachment can result in a loss of vehicle control, increasing the risk of a crash.
Fix: Owners should not drive their vehicles until they have been repaired. Dealers will check the center lock wheel fastening system and replace any incorrectly manufactured parts, as necessary, free of charge. Owner notification letters were mailed on January 24, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARC4.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cayenne, Cayenne E-Hybrid, 2020-2025 911, Taycan, 2024-2025 Panamera, and 2025 Panamera E-Hybrid vehicles. The rearview camera image may not display when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility.".
Risk: A rearview image that does not display properly reduces the driver's view behind the vehicle, increasing the risk of a crash.
Fix: Dealers will update the driver assistance software, free of charge. Owner notification letters were mailed February 13, 2026. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ASB2. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning January 19, 2026.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2024 911 vehicles. The front windshield and rear window may not be properly secured and can detach.
Risk: During air bag deployment, an unsecured windshield may not support the front air bags as intended, increasing the risk of injury in a crash.
Fix: Dealers will inspect and replace the windshield and rear window as necessary, free of charge. Owner notification letters were mailed on August 30, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARA3.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2021-2023 911 Turbo S, 2022 911 Turbo, 2022-2023 911 GT3 Touring, 911 GT3, 911 Carrera 4 GTS, 2022-2024 911 Carrera GTS, 2023 911 GT3 RS, 911 Dakar, and 2024 911 Carrera T vehicles equipped with optional full bucket seats. The seat-mounted air bags may deploy unnecessarily during a crash.
Risk: Air bags that deploy unnecessarily can increase the risk of injury.
Fix: Dealers will reprogram the air bag control unit, free of charge. Owner notification letters were mailed December 11, 2023. Owners may contact Porsche's customer service at 1-800-767-7243. Porsche's number for this recall is APB3.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 911 Carrera and Taycan vehicles. The pressure input rod connection on the brake booster may be loose and could detach.
Risk: A detached pressure input rod will cause the brake pedal to fail, increasing the risk of a crash.
Fix: Dealers will repair or replace the brake booster as necessary, free of charge. Owner notification letters were mailed October 28, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB9.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 911 Carrera Coupe, 911 Carrera S Coupe, 911 Carrera 4 Coupe, 911 Carrera 4S Coupe, 911 Turbo Coupe, 911 Turbo S Coupe, Panamera, Panamera 4 E-Hybrid, Panamera 4S, Panamera GTS, Panamera Turbo S, Taycan, Taycan 4S, Taycan Turbo, and Taycan Turbo S vehicles. The seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection.".
Risk: An unsecured child restraint system can increase the risk of injury during a crash.
Fix: Dealers will inspect and replace the seat belt assemblies, as necessary, free of charge. Owner notification letters were mailed October 1, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB6.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 911 Turbo Coupe, 911 Turbo S Coupe, 911 Carrera 4S Targa, 911 Carrera 4S Cabriolet, 911 Turbo S Cabriolet, and 911 Turbo Cabriolet vehicles. Incorrect passenger seat was installed and may cause a Occupant Classification System (OCS) malfunction.
Risk: An OCS malfunction may affect the front passenger air bag, increasing the risk of injury.
Fix: Dealers will install the correct seat, free of charge. Owner notification letters were mailed November 16, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB3.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 Porsche Taycan Turbo, Taycan Turbo S, Taycan, Taycan 4S, 911 Turbo S Coupe, Cayman, Cayman T, Cayman S, Cayman GT4, 911 Carrera Coupe, 911 Carrera S Coupe, 911 Carrera 4S Coupe, 911 Carrera 4S Targa, 911 Carrera Cabriolet, 911 Carrera S Cabriolet, 911 Carrera 4S Targa Heritage Design Edition, 911 Carrera 4S Cabriolet, 911 Turbo Coupe, 911 Turbo Cabriolet, 911 Turbo S Cabriolet, 718 Spyder, and Boxster vehicles. Certain suspension components may not have been tightened correctly and can loosen.
Risk: Loose suspension components may detach, causing a sudden loss of vehicle stability and control, and increasing the risk of a crash.
Fix: Dealers will replace the affected suspension nuts and bolts. Dealers will also inspect surrounding components for damage, and replace any damaged parts as necessary. Repairs will be performed free of charge. Owner notification letters were mailed May 7, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMA3.
Cars shoppers compare with the Porsche 911, with their own 2021 checklists.
2021 owner complaints, side by side
