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ProblemsByVinFile / 2018-TOYOTA-SIENNANHTSA data synced 3 days ago
Toyota
2018 Toyota Sienna problems
The 2018 Toyota Sienna has 69 NHTSA owner complaints and 2 active recall campaigns on file. Here's the breakdown — what's serious, what's noise, and what a working mechanic would actually do about it.
The 2018 Toyota Sienna has 69 NHTSA owner complaints and 2 recalls on file (U.S. federal records, as of July 2026). The most-reported system is powertrain at 18 complaints, typically surfacing around 61,500 miles (~$2,500 to repair). Source: NHTSA Office of Defects Investigation.
Solid reliability overall. Common issues are concentrated in a few systems.
0
Critical
2
Severe
0
Moderate
Should you avoid this 2018 Sienna?
Generally reliable
Buyable on the data — keep up the usual maintenance and inspect normally.
No systemic severe-failure pattern in the complaint record
Reliability score 7.6/10 — above the segment average
2 recall campaigns on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
Buying a used 2018 Toyota Sienna? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
powertrain — 18 owner reports
· tends to show around 61,500 mi · ~$2,500 to fix
electrical — 6 owner reports
· tends to show around 85,051 mi · ~$850 to fix
airbags — 4 owner reports
· tends to show around 69,333 mi · ~$1,100 to fix
body — 4 owner reports
· tends to show around 13,800 mi · ~$1,500 to fix
⚠ The one to take seriously: airbags is flagged
severe on this model
, showing up around 69,333 mi.
Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — 2 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 7.6/10 model. The priciest documented failure is
powertrain (~$2,500) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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My 2018 sienna le is experiencing acceleration problems. I had the software up dated but after approximately 1,000 miles the problem is returning. This problem is especially unsafe when merging onto the highway.
The automatic sliding doors do not have an auto/emergency stop if something impedes their shutting. A child can get crushed if an adult is not there to stop the doors. Even though I was there it was very hard for me (an adult) to stop the doors from closing. Yes, the child…
The contact owns a 2018 Toyota Sienna. The contact stated while driving at an undisclosed speed, the vehicle jerked and lost motive power. In addition, the contact stated that on several occasions the vehicle shut off independently. The vehicle was taken to the dealer; however,…
Had a problem with your 2018 Toyota Sienna?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
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Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Vantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles
The contact may cause failure of the rear brake hoses, resulting in a loss of vehicle control and reduced braking ability, increasing the risk of a crash.
Fix: Vantage will notify owners, and dealers will install a set of rear brake hoses that will provide the proper clearance, free of charge. The recall began December 16, 2019. Owners may contact Vantage customer service at 1-800-488-9082.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018 Toyota Sienna vehicles built with a specific lot of 10-spoke alloy wheels from one production facility
If the wheels crack at the spokes, the wheel may separate from the hub assembly causing a loss of vehicle control and increasing the risk of a crash.
Fix: Toyota began notifying owners initially by phone on February 26, 2018 and will mail letters to any unnotified owner starting on April 20, 2018. Dealers will inspect the wheels and replace them if necessary depending on their production location, free of charge. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is J0J.
Common questions
Is the 2018 Toyota Sienna reliable?
Mostly yes. With a reliability score of 7.6 out of 10 based on 69 owner complaints filed with NHTSA, the 2018 Toyota Sienna is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2018 Toyota Sienna?
On the NHTSA data, the 2018 Toyota Sienna does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 7.6/10 — above the segment average; 2 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2018 Toyota Sienna?
Inspect the powertrain first — it's the most-reported issue on this model, with 18 owner complaints filed. Typical failure occurs around 61,500 miles. Average repair cost runs about $2,500 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2018 Toyota Sienna a good used car to buy?
It scores 7.6 out of 10 on our NHTSA-based read of 69 owner complaints. The main thing to watch is powertrain. Typical failure occurs around 61,500 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2018 Toyota Sienna?
Based on NHTSA records, the most-reported issue is powertrain, with 18 complaints filed. Typical failure occurs around 61,500 miles. Average repair cost runs about $2,500 at an independent shop.
What's the most expensive thing that goes wrong?
The powertrain is one of the costlier repair items. Average repair cost runs about $2,500 at an independent shop. Typical failure occurs around 61,500 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Toyota Sienna has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2018 Toyota Sienna?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 69 complaints on file and the costliest repair averaging $2,500, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 3 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Toyota/Sienna.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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