Multiple recalls and numerous owner complaints indicate a significant issue with the fuel pump's reliability, potentially leading to engine stalling. This can cause unexpected engine shutdown, posing a safety risk. Estimated repair cost: $500 - $800.

8-Speed Automatic Transmission Issues

Reports suggest issues with the 8-speed automatic transmission, including software glitches and potential internal component problems. This can affect driving dynamics and potentially lead to premature wear if not addressed. Estimated repair cost: $150 - $1,500.

Steering Shaft Issues

Recalls have been issued for steering shaft extensions that may fracture due to improper manufacturing, leading to a loss of steering. This is particularly noted on modified vehicles. Estimated repair cost: $0 (Recall Item).

Recalls have addressed brake hoses, especially on converted or modified vans, that may be too short or improperly fitted, leading to rubbing and potential failure. This poses a significant safety risk. Estimated repair cost: $200 - $500.

Sunroof Glass Shattering

While not as common as other issues, there are reports of sunroof glass shattering without apparent cause. This can be a safety hazard due to falling glass. Estimated repair cost: $500 - $1,000.

2018 Toyota Sienna Maintenance guide

Name: Maintenance dataset for 2018 Toyota Sienna
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed8 Critical Recalls

MAINTENANCE SUMMARY

The 2018 Toyota Sienna, a practical family minivan, presents a maintenance profile marked by significant concerns, particularly regarding its fuel pump reliability and powertrain performance. Multiple recalls and a high volume of owner complaints highlight the fuel system as a primary area of attention.

View Critical Issue: Airbag System Malfunctions

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Reliability Score

Est. Annual Maintenance Cost

$1,000 - $1,500

TSBs & Recalls

127 TSBs | 10 Recalls

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Key Takeaways

Fuel Pump Issues: Multiple recalls and numerous complaints point to fuel pump failures as a significant concern, potentially leading to engine stalling.
Transmission Performance: The 8-speed automatic transmission can exhibit harsh shifting, hesitation, and delayed acceleration, often requiring software updates or internal inspection.

4 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance