Engine Stalling/Performance Issues

Engine complaints often relate to the auto start/stop system causing stalling or unexpected revving. Some reports suggest issues with the engine control module or related sensors. Estimated repair cost: $300 - $1000.

Electrical System Faults

Electrical system issues include persistent check engine lights and the 'Shift to Park' message, which can lead to battery drain. Problems with the Electronic Control Module (ECM) or wiring harnesses are common. Estimated repair cost: $200 - $800.

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2018 Buick Regal Maintenance guide

Name: Maintenance dataset for 2018 Buick Regal
Creator: Carfocal

v1.0Updated May 30, 2026Ethan Miller4 Sources Analyzed3 Critical Recalls

MAINTENANCE SUMMARY

The 2018 Buick Regal, with a 'Below Average' reliability verdict, demands diligent maintenance, particularly concerning its service brakes and engine. Owners should prioritize regular inspections of the braking system due to a high concentration of complaints and recalls related to hydraulic and electronic control modules.

View Critical Issue: Service Brakes Failure

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Reliability Score

Est. Annual Maintenance Cost

$300 - $500

TSBs & Recalls

362 TSBs | 4 Recalls

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Key Takeaways

Prioritize inspection and maintenance of the service brakes due to frequent complaints and recalls.
Monitor engine performance, particularly the auto start/stop system, for potential stalling or rough operation.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance