2021 Porsche 911 - Maintenance & Specs
The 2021 Porsche 911 belongs to a Porsche 911 lineup that Know Your Ride tracks across 35 model years, from 1981 to 2026. Engine options on record include the 3.7L, 3.0L, 3.0L V6 / 3.7L V6. It is configured as all-wheel drive with an automatic (am-s8). The 2021 sits mid-run, with both earlier (1981) and later (2026) 911 model years also documented.
It takes 0W-40 full synthetic oil, 4.5 qt with a new filter meeting A40. Fluid specs on file include Long Life coolant, DOT 4 brake fluid, Dexron VI transmission fluid. Know Your Ride lists 14 scheduled maintenance items for this vehicle, the earliest interval falling at 5,000 miles. Documented torque values include oil drain plug 20 ft-lb, lug nut 96 ft-lb, spark plug 18 ft-lb.
There are 6 safety recalls on record; one covers: Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 Porsche Taycan Turbo, Taycan Turbo S, Taycan, Taycan 4S, 911 Turbo S Coupe.... Its overall reliability signal is rated "Good" based on aggregated complaint and crash data.
EPA fuel economy is rated at 15 city / 20 highway MPG, 17 MPG combined. Estimated annual fuel cost is about $3,400.
Quick Specs
| Oil viscosity | 0W-40 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.5 qt |
| OEM oil spec | A40 |
| EPA combined | 17 MPG |
| Coolant | Long Life |
| Open recalls on record | 6 |
| Technical service bulletins | 200 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
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Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.