2018 Kia Sedona vs 2018 Toyota Sienna
Reliability comparison based on NHTSA recall and complaint records.
2018 Kia Sedona
2018 Toyota Sienna
Stories from the shop
Direct rivals running close enough that you'd be fine either way. Reliability scores within rounding distance (3.9 for the 2018 Kia Sedona, 3.8 for the 2018 Toyota Sienna). When two vehicles in the same segment land this close, the data alone won't pick a winner.
If you lean 2018 Kia Sedona, know what you're getting into on engine and electrical. Those categories have noticeably more complaints than the 2018 Toyota Sienna sees, and they're not cheap items when they go.
Going with the 2018 Toyota Sienna? Watch the powertrain and body. The 2018 Kia Sedona has fewer reports in those categories, so you'd be trading one set of weak spots for another.
On the dollars-and-cents side, total repair exposure across the top problem areas runs 1.4x higher on the 2018 Toyota Sienna. That's the number to keep in mind when you're pricing the deal — a $2,000 difference in purchase price disappears the first time you're staring at a transmission rebuild.
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 Kia Sedona or the 2018 Toyota Sienna?
It's close to a tie. Both vehicles score within 0.2 points on our reliability index (3.9 vs 3.8). 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 2018 Kia Sedona?
Compared to the 2018 Toyota Sienna, the 2018 Kia Sedona sees more reported issues in engine and electrical. 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 Toyota Sienna?
Compared to the 2018 Kia Sedona, the 2018 Toyota Sienna has more complaints in powertrain and body. 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 2 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 $7,150 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.