2021 Subaru Legacy - Maintenance & Specs
The 2021 Subaru Legacy belongs to a Subaru Legacy lineup that Know Your Ride tracks across 15 model years, from 1990 to 2021. Engine options on record include the 2.5L, 2.4L, 2.4L I4 / 2.5L I4. It is configured as all-wheel drive with an automatic (av-s8). This 2021 car is the most recent Subaru Legacy model year on record.
It takes 0W-20 full synthetic oil, 5.1 qt with a new filter meeting API SP. Fluid specs on file include Super Long Life coolant, DOT 3 brake fluid, Subaru ATF HP transmission fluid. Know Your Ride lists 13 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 33 ft-lb, lug nut 89 ft-lb, spark plug 18 ft-lb.
NHTSA complaints for this vehicle cluster around unknown or other (5), visibility/wiper (5), air bags (3). A representative report reads: "Car intermittently will studder and not go into first gear or go into second gear dangerously having car bog down and almost stall and then it violently..." There are 3 safety recalls on record; one covers: Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit....
EPA fuel economy is rated at 27 city / 35 highway MPG, 30 MPG combined. Estimated annual fuel cost is about $1,450.
Quick Specs
| Oil viscosity | 0W-20 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 5.1 qt |
| OEM oil spec | API SP |
| Oil filter | Fram XG7317 |
| EPA combined | 30 MPG |
| Tire size | 215/55R17 |
| Coolant | Super Long Life |
| NHTSA overall | 5 / 5 stars |
| Open recalls on record | 3 |
| 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
Related Vehicles
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.