Ignition Coil Failure

Individual ignition coils can fail, leading to misfires and reduced engine performance. This is a common wear item on many vehicles. Estimated repair cost: $400 - $800.

The water pump seal can degrade over time, leading to coolant leaks. Early detection is crucial to prevent engine overheating. Estimated repair cost: $600 - $1000.

The serpentine or drive belt can crack or fray over time, potentially leading to loss of power steering, alternator function, or air conditioning. Estimated repair cost: $150 - $300.

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2011 Lexus IS Maintenance guide

Name: Maintenance dataset for 2011 Lexus IS
Creator: Carfocal

v1.0Updated Jul 4, 2026Ethan Miller4 Sources Analyzed

MAINTENANCE SUMMARY

The 2011 Lexus IS offers good reliability with a score of 9.4, but its maintenance requires attention to premium fuel consumption (18 MPG combined) and adherence to a strict service schedule. With zero recalls and complaints, specific failure patterns are uncharacterized, making proactive general maintenance crucial.

View Critical Issue: Water Pump Leak

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Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

11 TSBs | 0 Recalls

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Key Takeaways

Excellent reliability rating with no reported recalls or complaints.
Requires premium fuel for the 5.0L V8 engine.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance