2021 Mazda Mazda3 vs 2021 Nissan Sentra
Reliability comparison based on NHTSA recall and complaint records.
2021 Mazda Mazda3
2021 Nissan Sentra
Stories from the shop
The 2021 Mazda Mazda3 edges this one, but it's tight. We're talking 4.0 versus 3.7 on reliability. Close enough that specific feature preferences or one favorable price could legitimately swing it the other way.
If you lean 2021 Mazda Mazda3, know what you're getting into on engine and airbags. Those categories have noticeably more complaints than the 2021 Nissan Sentra sees, and they're not cheap items when they go.
Going with the 2021 Nissan Sentra? Watch the electrical and steering. The 2021 Mazda Mazda3 has fewer reports in those categories, so you'd be trading one set of weak spots for another.
Bottom line: pick based on use case more than the spec sheet. If you tow heavy and don't want to think about it, that's one calculation. If you're a daily driver and want the cheapest path forward, that's another. Both of these will get you down the road. We're just telling you where each one is most likely to break.
Side-by-side by problem area
Common questions
Which is more reliable, the 2021 Mazda Mazda3 or the 2021 Nissan Sentra?
Based on the NHTSA data we track, the 2021 Mazda Mazda3 comes out ahead with a reliability score of 4.0 versus 3.7. The margin is narrow, so the verdict could shift if you weight specific categories differently or factor in your own use case.
What goes wrong more often on the 2021 Mazda Mazda3?
Compared to the 2021 Nissan Sentra, the 2021 Mazda Mazda3 sees more reported issues in engine and airbags. That doesn't mean it's a bad truck — it means those are the categories worth budgeting for if you go that direction.
What goes wrong more often on the 2021 Nissan Sentra?
Compared to the 2021 Mazda Mazda3, the 2021 Nissan Sentra has more complaints in electrical and steering. Whether that's a deal-breaker depends on the cost and severity — see the comparison table above for repair cost ranges.
Which has more recalls?
Both vehicles have 1 active recalls. Total recall count alone isn't a great signal — what matters is severity. See the recall counts by severity in the comparison table.
Is an extended warranty worth it on either of these?
Both vehicles are out of factory bumper-to-bumper coverage at this point. Combined repair exposure across the top problem categories runs around $8,500 on the higher-risk vehicle. A quality service contract typically costs $1,800–3,500 over 3 years, so a single major failure usually pays for the contract. The math favors warranty coverage on whichever vehicle you choose, especially if you plan to keep it past 100,000 miles.