2018 Alfa Romeo Stelvio vs 2018 Mazda Mazda3
Reliability comparison based on NHTSA recall and complaint records.
2018 Alfa Romeo Stelvio
2018 Mazda Mazda3
Stories from the shop
The 2018 Mazda Mazda3 edges this comparison on reliability data (3.7 versus 3.4). These aren't a typical head-to-head, but if you're cross-shopping them, the data is what it is.
If you lean 2018 Alfa Romeo Stelvio, know what you're getting into on fuel system and engine. Those categories have noticeably more complaints than the 2018 Mazda Mazda3 sees, and they're not cheap items when they go.
Going with the 2018 Mazda Mazda3? Watch the visibility. The 2018 Alfa Romeo Stelvio 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 2018 Alfa Romeo Stelvio or the 2018 Mazda Mazda3?
Based on the NHTSA data we track, the 2018 Mazda Mazda3 comes out ahead with a reliability score of 3.7 versus 3.4. 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 2018 Alfa Romeo Stelvio?
Compared to the 2018 Mazda Mazda3, the 2018 Alfa Romeo Stelvio sees more reported issues in fuel system and engine. 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 2018 Mazda Mazda3?
Compared to the 2018 Alfa Romeo Stelvio, the 2018 Mazda Mazda3 has more complaints in visibility. 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?
The 2018 Alfa Romeo Stelvio has more active recalls (5 vs 2). Total count is less important than severity, though — a vehicle with one critical recall and zero moderate ones is generally riskier than one with five moderate recalls.
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 $9,200 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.