2021 Acura RDX - Maintenance & Specs
The 2021 Acura RDX belongs to a Acura RDX lineup that Know Your Ride tracks across 7 model years, from 2018 to 2026. Engine options on record include the 2.0L, 2.0L I4. It is configured as front-wheel drive with an automatic (s10). The 2021 sits mid-run, with both earlier (2018) and later (2026) RDX model years also documented.
It takes 0W-20 full synthetic oil, 4.2 qt with a new filter. Fluid specs on file include Type 2 coolant, DOT 4 brake fluid, Honda ATF DW-1 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 29 ft-lb, lug nut 80 ft-lb, spark plug 18 ft-lb.
NHTSA complaints for this vehicle cluster around unknown or other (20), service brakes (8), visibility/wiper (8). A representative report reads: "The Auto High-Beam system activates the high beams inappropriately during operation. The system triggers the high beams directly into the eyes of oncoming..." There are 2 safety recalls on record; one covers: ...erican Honda Motor Co.) is recalling certain 2021 Acura RDX and 2022 CR-V Hybrid vehicles. A component in the right or left front driveshaft may have....
EPA fuel economy is rated at 22 city / 28 highway MPG, 24 MPG combined. Estimated annual fuel cost is about $2,400.
Quick Specs
| Oil viscosity | 0W-20 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.2 qt |
| Oil filter | Honda 15400-PLM-A02 |
| EPA combined | 24 MPG |
| Tire size | 245/60R18 |
| Coolant | Type 2 |
| NHTSA overall | 5 / 5 stars |
| Open recalls on record | 2 |
| Technical service bulletins | 175 |
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.