2005 INFINITI QX56 vs 2005 Nissan 350Z
Reliability comparison based on NHTSA recall and complaint records.
2005 INFINITI QX56
2005 Nissan 350Z
Stories from the shop
Reliability scores run close (4.0 versus 3.9). The pick comes down to specific use case more than overall reliability scoring.
If you lean 2005 INFINITI QX56, know what you're getting into on brakes and fuel system. Those categories have noticeably more complaints than the 2005 Nissan 350Z sees, and they're not cheap items when they go.
Going with the 2005 Nissan 350Z? Watch the airbags and engine. The 2005 INFINITI QX56 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 2005 Infiniti QX56 or the 2005 Nissan 350Z?
It's close to a tie. Both vehicles score within 0.2 points on our reliability index (4.0 vs 3.9). At this margin, either choice is defensible — base your decision on the specific failure modes that matter to you.
What goes wrong more often on the 2005 Infiniti QX56?
Compared to the 2005 Nissan 350Z, the 2005 Infiniti QX56 sees more reported issues in brakes and fuel system. 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 2005 Nissan 350Z?
Compared to the 2005 Infiniti QX56, the 2005 Nissan 350Z has more complaints in airbags and engine. 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 0 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 $11,050 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.