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Mercedes Benz Gls 450 Problems

The Mercedes-Benz GLS 450 is the three-row flagship SUV from Mercedes, positioned as the S-Class of SUVs. With 272 complaints and no recorded deaths, the current generation introduced in 2020 offers a 362-horsepower turbocharged inline-6 with mild hybrid assistance, seating for up to seven, and the latest Mercedes technology. It competes directly with the BMW X7 and Range Rover, offering opulent appointments and genuine space for families requiring luxury and utility.

272
Total Complaints
40
Total Recalls
6
Model Years
0
Reported Deaths
✓

Best Years

These years have the fewest reported problems.

2024

Common Problem Categories

Electrical System 50
Engine 34
Unknown Or Other 30
Forward Collision Avoidance 30
Service Brakes 22

Complaints by Model Year

All Model Years

Year ↓ Complaints Recalls Crashes Fires Rating
2024 18 0 4 0 Good
2023 32 5 0 0 Average
2022 44 10 12 0 Average
2020 98 20 12 0 Below Average
2019 40 2 0 2 Average
2018 40 3 2 10 Average

Mercedes Benz Gls 450 Years to Avoid

The 2020 first-year GLS 450 leads in complaints with infotainment system crashes, air suspension malfunctions, and various sensor failures typical of heavily electronic first-year vehicles. Software bugs, backup camera issues, and trim quality concerns were reported.

Best Mercedes Benz Gls 450 Years

The 2024 GLS 450 benefits from four years of refinement with most software issues resolved and production quality stabilized. The 2023 models also perform well with updated infotainment and improved build consistency.

Frequently Asked Questions

Is the 2020 GLS 450 reliable?

The 2020 model year experienced typical first-year problems including software glitches, sensor failures, and air suspension concerns. Most issues were addressed under warranty, but buying a 2022 or newer avoids early-production troubles.

What engine does the GLS 450 use?

The GLS 450 uses Mercedes' M256 3.0L turbocharged inline-6 with EQ Boost mild hybrid assistance, producing 362 horsepower and 369 lb-ft of torque. This modern engine combines smooth power delivery with reasonable efficiency for its size.

Is the GLS 450 third row usable?

Yes, the GLS third row accommodates average-sized adults for short trips, unlike many competitors. Entry and exit require climbing over folded second-row seats, but legroom and headroom are adequate for a third-row.

GLS 450 versus GLS 580?

The GLS 580 adds a 4.0L twin-turbo V8 with 483 horsepower for $10,000 more. The 450's inline-6 handles most driving situations well and provides better fuel economy. The 580 makes sense for towing heavy loads or preferring V8 power.

How reliable is the air suspension?

Mercedes AIRMATIC suspension provides excellent ride quality but adds complexity. Repairs typically cost $1,500-$3,000 per corner if struts fail. The system generally lasts 80,000-120,000 miles before requiring attention.