Is the 2018 Mercedes-Benz G-Class reliable?

The 2018 Mercedes-Benz G-Class scores 72/100 (C+) on OwnerKeep's reliability index, which places it in the moderate risk category. See the full report for the specific strengths and failure points.

What are the common problems with the 2018 Mercedes-Benz G-Class?

See the Common Issues section above for the top failure areas reported by real owners, with typical mileage ranges where problems start showing up.

How much does it cost to maintain a 2018 Mercedes-Benz G-Class?

Expected maintenance costs depend heavily on age, mileage and how well the vehicle was kept up. Run the full report for a year-by-year cost outlook.

What should I check before buying a 2018 Mercedes-Benz G-Class?

Focus on the top risk areas flagged in this report, review service history, and verify the vehicle is not inside one of the mileage danger zones listed above.

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Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

2018 Mercedes-Benz G-Class Reliability ReportCommon Problems, Repair Costs & Expert Verdict

72/ 100

KeepScore

MODERATE RISK

Grade: C+

A tank in luxury clothing, demanding a tank-sized budget for its upkeep.

Full system breakdown + what I would do

Quick Facts · 2018 Mercedes-Benz G-Class

No active NHTSA safety recalls on record — a clean recall slate for the 2018 model year.
Scores 6 points below the strongest nearby year — the 2016 Mercedes-Benz G-Class earns a 78.
The system most likely to surface first: electrical/electronics (moderate severity).

Should You Buy the 2018 Mercedes-Benz G-Class?

The 2018 Mercedes-Benz G-Class is an icon of luxury and capability, boasting an undeniably robust build; however, its complex German engineering and high-performance components translate directly into significant ownership costs. While the core mechanicals are durable, prepare for substantial repair bills and meticulous maintenance to keep this off-road legend running optimally.

Biggest Strengths

Rugged frame and powertrain components
Exceptional off-road durability
High-quality materials and build finish

Top Risk Areas

The systems that break first on the 2018 Mercedes-Benz G-Class. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

Electrical/Electronicsmoderate

Suspension Componentsmoderate

Brake Systemmoderate

Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

NHTSA Recalls

No active NHTSA safety recalls on file for the 2018 Mercedes-Benz G-Class. Always verify with your VIN atnhtsa.gov.

What breaks on the 2018 Mercedes-Benz G-Class?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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Mercedes-Benz G-Class by Year

Compare KeepScores across nearby years of the Mercedes-Benz G-Class. Click any year for its full report.

All Mercedes-Benz G-Class years ranked →Mercedes-Benz G-Class years to avoid →Mercedes-Benz G-Class common problems →

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Frequently Asked Questions

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