Is the 2018 Mercedes-Benz Gls reliable?

The 2018 Mercedes-Benz Gls 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 Gls?

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 Gls?

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 Gls?

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 Gls Reliability ReportKeepScore 72/100 · top failure points · buy or avoid

72/ 100

KeepScore

MODERATE RISK

Grade: C-

A powerhouse of luxury and capability, but prepare your wallet for its intricate and often expensive maintenance needs.

Full system breakdown + what I would do

Quick Facts · 2018 Mercedes-Benz Gls

Scores 6 points below the strongest nearby year — the 2017 Mercedes-Benz Gls earns a 78.
The system most likely to surface first: airmatic air suspension system (major severity).
No active NHTSA safety recalls on record — a clean recall slate for the 2018 model year.

2018 Mercedes-Benz Gls: Buy or Avoid?

The 2018 Mercedes-Benz GLS is a luxurious and capable full-size SUV that offers impressive comfort and performance, but its complex engineering brings a significant risk of expensive repairs as it ages. While it provides an opulent experience, prospective owners must budget generously for potential air suspension and electrical system issues to truly enjoy this vehicle without financial surprises.

Biggest Strengths

Robust V8 engine performance (GLS 550)
Luxurious and comfortable interior ride
Strong body structure and excellent safety features

2018 Mercedes-Benz Gls — Known Trouble Spots

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

AIRMATIC Air Suspension Systemmajor

Electrical System & Modulesmoderate

Engine Oil Leaks & PCV Systemmoderate

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

Safety Recalls on the 2018 Mercedes-Benz Gls

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

What breaks on the 2018 Mercedes-Benz Gls?

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

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Mercedes-Benz Gls — Year-by-Year Comparison

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

All Mercedes-Benz Gls years ranked →Mercedes-Benz Gls years to avoid →Mercedes-Benz Gls common problems →

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Frequently Asked Questions

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