2021 Mazda CX-30 - Maintenance & Specs
The 2021 Mazda CX-30 belongs to a Mazda CX-30 lineup that Know Your Ride tracks across 4 model years, from 2020 to 2026. Engine options on record include the 2.5L, 2.5L I4. It is configured as front-wheel drive with an automatic (s6). The 2021 sits mid-run, with both earlier (2020) and later (2026) CX-30 model years also documented.
It takes 0W-20 full synthetic oil, 4.5 qt with a new filter meeting API SP. Fluid specs on file include FL22 coolant, DOT 3 brake fluid, Mazda ATF FZ transmission fluid. Know Your Ride lists 14 scheduled maintenance items for this vehicle, the earliest interval falling at 7,500 miles. Documented torque values include oil drain plug 27 ft-lb, lug nut 80 ft-lb, spark plug 18 ft-lb.
NHTSA complaints for this vehicle cluster around engine (34), visibility/wiper (8), unknown or other (5). A representative report reads: "While driving, on approach to a stop signal, at an intersection the car stopped moving. The display said engine malfunction, have inspected. The electronics..." There are 2 safety recalls on record; one covers: Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles. When fully opened, the power liftgate may partially lower....
EPA fuel economy is rated at 25 city / 33 highway MPG, 28 MPG combined. Estimated annual fuel cost is about $1,550.
Quick Specs
| Oil viscosity | 0W-20 |
| Oil type | Full Synthetic |
| Oil capacity (w/ filter) | 4.5 qt |
| OEM oil spec | API SP |
| Oil filter | Mobil 1 M1-110A |
| EPA combined | 28 MPG |
| Tire size | 215/55R17 |
| Coolant | FL22 |
| NHTSA overall | 5 / 5 stars |
| Open recalls on record | 2 |
| 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.