2018 Mercedes-Benz S-Class reliability
The 2018 Mercedes-Benz S-Class has 29 complaints with NHTSA after 9 years, or 3 per year. That is more complaints per year than most S-Class years here — over the median of the other years, which is 2. NHTSA has no recalls on file for this model year.
29
3
0
9
The complaints owners file most often name Engine (7 of 29), then Service brakes (5) and Steering (5). Those filings include 2 that report a crash, 2 that report a fire, and 1 that reports an injury.
The 2017 S-Class has 22 complaints, 2 per year, and the 2019 has 16 complaints, 2 per year. The 2018 has more complaints per year than the 2017. The 2018 has more complaints per year than the 2019.
The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2018 Mercedes-Benz S-Class. How we count. Data as of .
Recalls (0)
No recalls on file with NHTSA for this model year.
Complaints by component (29 total)
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2
2
1
0
Complaints filed per year
Excerpts from recent NHTSA complaint filings
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"Excessive engine oil lead from the back seal. Also, slow coolant leak. The car has a low mileage of 46k."
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"Vehicle had a low tire, vehicle indicated it needed to be driven for recalibration of the sensor(s). Took vehicle for short drive up two lane road. Turned around and headed back to where was staying and upon…"
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"The Squib For PRE-SAFE(R) Pulse '' Front Passenger'' Has A S560 w222 model airbag sensors problem an defective parts needs be investigated"
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"My 2018 S560 Mercedes occasionally misfires upon acceleration. This has happened at six times over the past three years. When this happens, the engine loses power, starts to shake, and the check engine light comes on.…"
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"The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the gear shifter independently shifted into neutral. The contact had to hold down the gear shifter for about 30…"
NHTSA crash ratings
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Mercedes-Benz S-Class 4 DR 4WD | Not rated | Not rated | Not rated | Not rated |
| 2018 Mercedes-Benz S-Class 4 DR RWD | Not rated | Not rated | Not rated | Not rated |
| 2018 Mercedes-Benz S-Class C 4WD | Not rated | Not rated | Not rated | Not rated |
| 2018 Mercedes-Benz S-Class C RWD | Not rated | Not rated | Not rated | Not rated |
| 2018 Mercedes-Benz S-Class Coupe 2 DR 2WD | Not rated | Not rated | Not rated | Not rated |
| 2018 Mercedes-Benz S-Class Coupe 2 DR 4WD | Not rated | Not rated | Not rated | Not rated |
Stars are how this vehicle did in NHTSA crash tests. They are a safety result, separate from the complaint record. Not rated means that test was not run for this version.
Specs and fitment
Known issues for this generation
Recall 20V-449 covers certain 2017-2019 S-Class vehicles (with C-Class, E-Class, and related coupe/convertible/CLS models) where an unfastened front seat belt may trigger only a steady warning lamp instead of the intended blinking lamp and audible tone. Dealers update instrument-cluster software. NHTSA complaints on 2015 S-Class filings most often name seat belts, structure, and the electrical system.
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Frequently asked questions
Is the 2018 Mercedes-Benz S-Class reliable?
The 2018 Mercedes-Benz S-Class has 29 complaints with NHTSA after 9 years, or 3 per year. That is more complaints per year than most S-Class years here — over the median of the other years, which is 2. NHTSA has no recalls on file for this model year.
What are common problems with a 2018 Mercedes-Benz S-Class?
The complaints owners file most often name Engine (7 of 29), then Service brakes (5) and Steering (5). Those filings include 2 that report a crash, 2 that report a fire, and 1 that reports an injury.
Is the 2018 Mercedes-Benz S-Class more reliable than the years next to it?
The 2017 S-Class has 22 complaints, 2 per year, and the 2019 has 16 complaints, 2 per year. The 2018 has more complaints per year than the 2017. The 2018 has more complaints per year than the 2019.
Has the 2018 Mercedes-Benz S-Class been recalled?
NHTSA has no recalls on file for the 2018 Mercedes-Benz S-Class.
How many complaints have owners filed about the 2018 Mercedes-Benz S-Class?
Owners have filed 29 complaints about the 2018 Mercedes-Benz S-Class with NHTSA.
What oil does a Mercedes-Benz S-Class take?
W222 S 550 lists 0W-30/0W-40/5W-30/5W-40 (~8.5 qt); W223 S 500 lists 0W-40 or 5W-40 (~7.7 qt). Verify the MB approval sheet on the oil container.
What does recall 21V-843 cover on the S-Class?
Certain 2021-2022 S 580 and Maybach S 580 vehicles (9,120 units across those nameplates) where engine wiring may be incorrect—see the NHTSA campaign for the remedy.
Which S-Class generations does this site track?
W222 (2012-2020) and W223 (2021-on).