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

2018 Toyota Sienna Maintenance guide

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

MAINTENANCE SUMMARY

View Critical Issue: Airbag System Malfunctions

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$1,000 - $1,500

TSBs & Recalls

127 TSBs | 10 Recalls

CarFocal account required

Unlock the Full 2018 Toyota Sienna Maintenance Guide

Create a free account to reveal the full service schedule, repair costs, and deeper diagnostic data.

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