2018 Honda Odyssey vs 2018 Toyota Sienna
Reliability comparison based on NHTSA recall and complaint records.
2018 Honda Odyssey
2018 Toyota Sienna
Stories from the shop
If I'm picking between these two head-to-head, I'm taking the 2018 Toyota Sienna. Reliability score's a solid 3.8 versus 3.3 on the 2018 Honda Odyssey, and the complaint counts back it up — 67 versus 913. That's not noise, that's a real gap between rivals built for the same buyer.
If you lean 2018 Honda Odyssey, know what you're getting into on electrical and powertrain. Those categories have noticeably more complaints than the 2018 Toyota Sienna sees, and they're not cheap items when they go.
On the dollars-and-cents side, total repair exposure across the top problem areas runs 1.9x higher on the 2018 Honda Odyssey. 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 Honda Odyssey or the 2018 Toyota Sienna?
Based on the NHTSA data we track, the 2018 Toyota Sienna comes out ahead with a reliability score of 3.8 versus 3.3. The margin is clear, 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 Honda Odyssey?
Compared to the 2018 Toyota Sienna, the 2018 Honda Odyssey sees more reported issues in electrical and powertrain. 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?
On the categories we tracked, the 2018 Toyota Sienna doesn't show meaningfully more complaints than the 2018 Honda Odyssey. The two are running close.
Which has more recalls?
The 2018 Toyota Sienna has more active recalls (2 vs 1). 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 $13,750 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.