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2020 Mercedes-benz Gls-class
Solid pick. The public record on this car is clean for its age. Inspect it, then negotiate with confidence.
38 owner complaints · 0 recalls · data verified July 14, 2026 · source: NHTSA
Why buy?
Electrical system problems dominate (47% of complaints).
Very few owner complaints for its age and sales volume.
Zero recalls, rare for a car this age.
The math, shown
Full methodology →Complaints filed per year
Fading = early teething worked out. Climbing = problems aging in.
How it crashes
NHTSA’s own crash tests, separate from the reliability score above.
NHTSA crash-tested this model year but didn’t publish an overall star rating for it.
Source: nhtsa.gov/ratings. Star ratings compare vehicles within the same class and size, not across every car on the road.
The road ahead
What breaks on a 2020 Mercedes-benz Gls-class, plotted where owners report it happening.
Also reported (mileage varies): Electrical system (18) · Engine (9) · Fuel system (8) · Driver assistance (7)
Mileage medians come from owners who mentioned an odometer reading in their NHTSA complaint, a rough guide, not a schedule.
Electrical system
47%18 complaints · 6 in the last 2 years
“The vehicle (2020 GLS 450) suffers from terminal infrastructure "Electronic Rot," resulting in a consistent Breach of FMVSS 111 (Rearview Visibility) and dangerous Aut…”
Engine
24%9 complaints · 4 in the last 2 years
“The vehicle is experiencing deterioration of the main engine wiring harness insulation, resulting in exposed wires contacting each other. This condition has caused int…”
Fuel system
21%8 complaints · 2 in the last 2 years
“On numerous occasions, when either slowing down or in a slow turn, the engine dies and will not reengage until I have turned off the vehicle, exited, then reentered an…”
Driver assistance
18%7 complaints · 4 in the last 2 years
“On a sunny afternoon without zero clouds in the sky, 75 degrees I was driving at 35 mph on a two-lane road with no cars in front of me, behind me, or coming in the oth…”
Recalls (0)
No recall campaigns on file for this model year.
Before you hand over money
Check the VIN for open recalls
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150 to $250 independent inspection of this exact 2020 Mercedes-benz GLS-CLASS beats every score on the internet, including ours.
What to ask forNot set on the 2020? See how every Gls-class model year scores →
Cross-shopping? Compare the 2020 Mercedes-benz Gls-class against another car →
What owners say
Real owners of this exact model-year, shown separately from the NHTSA score. If they disagree, that’s worth knowing.