Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 3 Sport.
The 2021 Mazda 3 Sport offers researchers a reliability profile marked by a total of three owner complaints. Steering is identified as the top complaint area among these reports, which also include a single recall notice for the model year. This sparse data set places the vehicle in a favorable position within the model's reliability history, meaning researchers can evaluate the model with a minimal list of documented concerns.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI Mexico built:47, Japan built: 35 · 520 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
Engine, drivetrain, dimensions and economy.
| Overall length | 168.1 in |
| Overall width | 69.7 in |
| Overall height | 60.6 in |
| Wheelbase | 101.2 in |
| Curb weight | 2987 lb |
| Track (front / rear) | 59.8 / 59.8 in |
| Weight distribution (front / rear) | 60/40 |
Capacities, torques and tune-up values from the factory service manual.
Torque lug nuts to 80.0-108.0 ft-lbs. The firing order is 1-3-4-2.
| Engine Flywheel Bolts | 80.0-85.0 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 32.0-47.0 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 15.0-19.0 ft-lbs |
| Lug Nuts | 80.0-108.0 ft-lbs |
| Cylinder Firing Order | 1-3-4-2 |
| Standard BCI Group Number | Mexico built:47, Japan built: 35 |
| Standard BCI Cranking Performance | 520 cca |
| Engine Oil Pressure | 34-75 psi |
| Engine Oil Pressure RPM | 3000 rpm |
| Engine Oil Pressure | 57-94 psi |
| Engine Oil Pressure RPM | 3000 rpm |
| Intake Valve Lash | 0.009-0.012 in |
| Exhaust Valve Lash | 0.009-0.012 in |
| Intake Valve Lash | 0.009-0.011 in |
| Exhaust Valve Lash | 0.011-0.012 in |
| 1 | 27.0-53.0 inch lbs., Step 2: 71.0-97.0 inch lbs. | 27–53 in |
| 1 | 20.0-23.0 ft. lbs., Step 2: 80-100° | 20–23 ft. lbs |
| 1 | 20.0-23.0 ft. lbs., Step 2: 80-100° | 20–23 ft. lbs |
| 1 | 67.0-81.0 ft. lbs., Step 2: 55-65° | 67–81 ft. lbs |
| 1 | 9.5-12.5 ft. lbs., Step 2: 32.0-34.0 ft. lbs., Step 3: 85-95°, Step 4: 85-95° | 9.5–12.5 ft. lbs |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 2021 Mazda 3 Sport dominate in one area — the steering, 3 of 3 reports (100%), well ahead of the next concern. None of this vehicle's 1 recall campaigns target the steering, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the steering pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 3 complaints on record, top 1 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 1 of 1 campaigns on record for this vehicle.
Mazda North American Operations (Mazda) is recalling certain 2014-2018 Mazda3 and 2016-2021 CX-3 vehicles. The rearview camera image may not display properly by showing a flickering or distorted image. Remedy: Dealers will inspect and replace the rearview camera, as necessary. In addition, dealers will install a wiring harness fastening seal. All repairs will be performed free of…
Showing 5 of 276 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| SA-041-26 | 2026-06-18 | Electrical System | This SA supersedes the previously issued SA(s) listed below. The changes are noted in… |
| 09-019-26 | 2026-06-17 | Electrical System | This bulletin supersedes the previously issued bulletin(s) listed below. The changes are… |
| SA-027-26a | 2026-06-16 | Electrical System | This SA supersedes the previously issued bulletin(s) listed below. The changes are noted… |
| SA-031-26 | 2026-04-30 | Structure | DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle… |
| SA-029-26 | 2026-04-21 | Power Train | This Service Alert supersedes the previously issued SA listed below: The changes are… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.