Significant number of critical engine failures reported at low mileage, including complete shutdown, internal damage, and excessive oil consumption leading to seizure. This is the most prevalent complaint category. Estimated repair cost: $3,000 - $7,000+.

Complaints include issues with the brake booster, leading to heavy braking or loss of assist, and unexpected heavy braking incidents. Estimated repair cost: $300 - $800.

Reported issues include battery drain due to persistent accessory power and infotainment system malfunctions. Estimated repair cost: $200 - $600.

2018 Hyundai Elantra GT Maintenance guide

Name: Maintenance dataset for 2018 Hyundai Elantra GT
Creator: Carfocal

v1.0Updated May 30, 2026Ethan Miller4 Sources Analyzed

MAINTENANCE SUMMARY

The 2018 Hyundai Elantra GT, with an 'Average' reliability verdict and 68 complaints, demands vigilant maintenance, particularly concerning its engine. A significant number of critical engine failures are reported at low mileage, alongside issues with service brakes and electrical systems.

View Critical Issue: Engine Failure

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

31 TSBs | 2 Recalls

CarFocal account required

Unlock the Full 2018 Hyundai Elantra GT Maintenance Guide

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

Key Takeaways

Prioritize engine health through frequent oil level checks and timely oil changes.
Be aware of potential brake system issues, particularly the brake booster.

2 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance