2021 Subaru Outback - Maintenance & Specs
The 2021 Subaru Outback belongs to a Subaru Outback lineup that Know Your Ride tracks across 20 model years, from 2000 to 2026. Engine options on record include the 2.4L Flat4, 2.4L, 2.4L Turbo. It is configured as all-wheel drive with an automatic (av-s8). The 2021 sits mid-run, with both earlier (2000) and later (2026) Outback model years also documented.
It takes 5W-30 full synthetic oil, 5.1 qt with a new filter. Fluid specs on file include Subaru SLLC coolant, DOT 3 brake fluid, Subaru High-Torque CVTF 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 33 ft-lb, lug nut 89 ft-lb, spark plug 13 ft-lb.
NHTSA complaints for this vehicle cluster around visibility/wiper (86), electrical system (44), unknown or other (37). A representative report reads: "The battery zapped out in December of 2024 in the wintertime and left me stranded. Subaru towed it the next morning and replace for free only bc I mentioned..." There are 4 safety recalls on record; one covers: Subaru of America, Inc. (Subaru) is recalling certain 2021 Outback and Impreza vehicles. The continuously variable transmission (CVT) select lever....
EPA fuel economy is rated at 23 city / 30 highway MPG, 26 MPG combined. Estimated annual fuel cost is about $1,700.
Quick Specs
| Oil viscosity | 5W-30 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 5.1 qt |
| Oil filter | Subaru 15208AA170 |
| EPA combined | 26 MPG |
| Tire size | 245/60R18 |
| Coolant | Subaru SLLC |
| NHTSA overall | 5 / 5 stars |
| Open recalls on record | 4 |
| 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.