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

2018 GMC Yukon Reliability ReportKeepScore 85/100 · top failure points · buy or avoid

85/ 100

KeepScore

LOW RISK

Grade: B+

A powerful, capable SUV that offers strong utility, but requires vigilance for known engine and transmission quirks.

Full system breakdown + what I would do

Quick Facts · 2018 GMC Yukon

  • Scores 3 points below the strongest nearby year — the 2020 GMC Yukon earns a 88.
  • The system most likely to surface first: engine (afm system) (major severity).
  • Has 3 NHTSA recalls on record — the most notable involves the service brakes, hydraulic:power assist:vacuum.

2018 GMC Yukon: Buy or Avoid?

The 2018 GMC Yukon stands as a formidable, comfortable family hauler that offers substantial towing capacity and a commanding presence. While its truck-based DNA lends itself to general durability, prospective owners must be aware of specific, albeit manageable, mechanical vulnerabilities. With diligent maintenance and a thorough pre-purchase inspection, this full-size SUV can deliver many years of reliable service.

Biggest Strengths

  • Robust body-on-frame construction
  • Powerful V8 engine options (when healthy)
  • Spacious and comfortable interior

2018 GMC Yukon — Known Trouble Spots

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

1
Engine (AFM System)major
2
Transmission (8-Speed Automatic)moderate
3
HVAC Systemminor
Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

Safety Recalls on the 2018 GMC Yukon

3 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.

SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

General Motors LLC (GM) is recalling certain 2018 Cadillac Escalade, Chevrolet Silverado 1500 and Tahoe, GMC Sierra 1500 and Yukon vehicles equipped with either a 5.3L or 6.2L V8 engine. The output of the mechanical vacuum pump can decrease over time, decreasing the amount of vacuum/power brake assist.

SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum created by the vacuum pump may decrease over time.

What breaks on the 2018 GMC Yukon?

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

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GMC Yukon — Year-by-Year Comparison

Compare KeepScores across nearby years of the GMC Yukon. Click any year for its full report.

Competing 2018s Worth a Look

Similar class, similar year range — ranked by KeepScore.

Relevant Products for Your 2018 GMC Yukon

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Frequently Asked Questions

Full Report

2018 GMC Yukon

7-system breakdown, mileage danger zones, repair cost projections, buyer checklist, and expert verdict.

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Complete Owner's Guide

Already own one? Get the 13-chapter owner's guide with specs, service schedules, and fluid capacities.

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Final Step

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