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2018 Mercedes-benz GLS
Solid pick. The public record on this car is clean for its age. Inspect it, then negotiate with confidence.
22 owner complaints · 0 recalls · data verified July 20, 2026 · source: NHTSA
Why buy?
Very few owner complaints for its age and sales volume.
Zero recalls, rare for a car this age.
Score breakdown, by factor
Full methodology →#49 of 453Among the 2018 models with a matured record, the 2018 Mercedes-benz GLS ranks #49, scoring higher than 88% of them. See the 2018 ranking →
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 2018 Mercedes-benz GLS, plotted where owners report it happening.
Suspension
18%4 complaints · 3 in the last 2 years
“This 2018 gls 450 has issues with suspension system. Bought this car in 2023 and using since Jna 2023 and suspension system failed like 3 -4 times. Mechanic changed th…”
Brakes
18%4 complaints · 2 in the last 2 years
“Took vechicle for warranty repair of the frozen and suck both front calipers to Rallye mercedes dealer, repair was refused, car was noty drivable since brakes were stu…”
Electrical system
14%3 complaints
“TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLS450. WHILE DRIVING 70 MPH, THE VEHICLE LOST POWER AND ALL THE WARNING INDICATORS ON THE INSTRUMENT PANEL ILLUMINATED. ALSO…”
Engine
9%2 complaints · 1 in the last 2 years
“The contact owned a 2018 Mercedes Benz GLS450. The contact stated that after turning the ignition switch off, the driver suddenly discovered flames were coming from th…”
Check it against this car’s mileage
Type the odometer reading on the actual car you’re looking at to see which of these problem areas owners tend to report before it, around it, or after it.
Too few owners named a mileage on this model to place issues against an odometer yet.
Read all 22 owner complaints in their own words → · just the 4 crash/fire/injury reports →
Recalls (0)
No recall campaigns on file for this model year.
Questions to ask the seller
Questions worth asking any seller before you hand over money:
- Has this car been in any accident or had any structural, airbag, or flood-related repair? Do you have a clean title and a recent history report (Carfax / AutoCheck)?
- How many owners has it had, do you have the maintenance records, and why are you selling it?
- Are you open to me having an independent mechanic inspect it before we settle on a price?
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 2018 Mercedes-benz GLS beats every score on the internet, including ours.
What to ask forNot set on the 2018? See how every GLS model year scores →
Cross-shopping? Compare the 2018 Mercedes-benz GLS 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.