2018 Mercedes-Benz S-Class Safety Report
2018 Mercedes-Benz S-Class Safety Analysis
Safety Decision Cockpit for the 2018 Mercedes-Benz S-Class
This page is the hub for deciding what to inspect next on the 2018 Mercedes-Benz S-Class. It connects recall campaigns, owner complaint patterns, service bulletins, sibling model years, component issue hubs, and the model buying guide so a shopper or owner can move from a single report into the wider safety graph.
| Signal | Value | What to inspect next |
|---|---|---|
| Recall burden | Low (0) | Review campaign numbers, affected components, and dealer remedies below. |
| Owner complaints | Moderate (29) | Scan complaint narratives for recurring symptoms, mileage, crashes, fires, injuries, and dates. |
| Crash and fire reports | 4 | Treat any crash, fire, injury, or fatality-linked pattern as a priority pre-purchase inspection item. |
| Primary component hub | Engine | Compare engine issues across vehicles. |
2018 Mercedes-Benz S-Class Complaint Theme Map
Complaint counts become more useful when they are grouped into inspection themes. For the 2018 Mercedes-Benz S-Class, these are the component areas with the clearest NHTSA complaint signals. Use each link to jump from this single vehicle into broader component hubs and make-specific issue pages.
Engine
6 owner complaints mention this component in the current safety profile.
All Engine issues Mercedes-Benz onlyService Brakes
4 owner complaints mention this component in the current safety profile.
All Service Brakes issues Mercedes-Benz onlyUnknown Or Other
3 owner complaints mention this component in the current safety profile.
All Unknown Or Other issues Mercedes-Benz onlySteering
3 owner complaints mention this component in the current safety profile.
All Steering issues Mercedes-Benz onlyForward Collision Avoidance
2 owner complaints mention this component in the current safety profile.
All Forward Collision Avoidance issues Mercedes-Benz onlySteering,Suspension,Service Brakes
1 owner complaint mention this component in the current safety profile.
All Steering,Suspension,Service Brakes issues Mercedes-Benz onlyAI Safety Analysis for the 2018 Mercedes-Benz S-Class
Reliability Score
The 2018 Mercedes-Benz S-Class receives a reliability score of 87 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates above-average reliability relative to comparable vehicles.
Known Issues for the 2018 Mercedes-Benz S-Class
The following issues have been identified from NHTSA complaint data and owner reports for the 2018 Mercedes-Benz S-Class:
| Issue | Severity | Frequency | Typical Mileage |
|---|---|---|---|
| Engine Oil Leakage Excessive engine oil leakage from the back seal, with a low mileage of 46k. |
Medium | Common | 30k-60k miles |
| Service Brakes Wear Service brakes show signs of wear, with a low mileage of 46k. |
Medium | Common | 30k-60k miles |
| Sunroof Explosion Panoramic sunroof exploded and shattered while driving on a highway, causing potential injury. |
High | Occasional | 0-100k miles |
| Ignition Coil Failure Ignition coil failure and cylinder 5 misfire, with less than 30k miles. |
Medium | Common | 30k-60k miles |
Common Problems Reported by Owners
Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2018 Mercedes-Benz S-Class:
Leather cover for the dashboard has peeled up on the passenger side.
Adaptive cruise control malfunctioned while driving on an interstate.
Steering wheel became stiff to turn and a message appeared while driving.
Brake system issues reported, including occasional misfires and wear.
Frequently Asked Questions About the 2018 Mercedes-Benz S-Class
Has the 2018 MERCEDES-BENZ S-CLASS been recalled?
No, the 2018 MERCEDES-BENZ S-CLASS has no recalls on record with NHTSA as of our latest data update.
How many complaints does the 2018 MERCEDES-BENZ S-CLASS have?
The 2018 MERCEDES-BENZ S-CLASS has 29 complaints filed with NHTSA. Of these, 2 involved crashes. 1 injuries and 0 deaths have been reported.
What is the safety rating for the 2018 MERCEDES-BENZ S-CLASS?
The 2018 MERCEDES-BENZ S-CLASS does not have an NHTSA safety rating on file. This can happen for newer model years, specialty vehicles, or models that have not been crash-tested.
What are the most common problems with the 2018 MERCEDES-BENZ S-CLASS?
The most commonly reported problems with the 2018 MERCEDES-BENZ S-CLASS involve engine (6 complaints), service brakes (4 complaints), unknown or other (3 complaints). Other affected components include steering, forward collision avoidance, steering,suspension,service brakes.
How many crash reports does the 2018 MERCEDES-BENZ S-CLASS have?
There are 2 crash reports associated with the 2018 MERCEDES-BENZ S-CLASS out of 29 total complaints (6.9% of complaints involved crashes).
How many fire reports does the 2018 MERCEDES-BENZ S-CLASS have?
There are 2 fire reports for the 2018 MERCEDES-BENZ S-CLASS out of 29 total complaints. Fire reports are among the most serious safety concerns tracked by NHTSA.
Are there any deaths reported for the 2018 MERCEDES-BENZ S-CLASS?
No deaths have been reported in NHTSA complaints for the 2018 MERCEDES-BENZ S-CLASS.
How many injuries are reported for the 2018 MERCEDES-BENZ S-CLASS?
1 injury has been reported in NHTSA complaints for the 2018 MERCEDES-BENZ S-CLASS. These are self-reported by vehicle owners as part of their safety complaints.
Should I buy a 2018 MERCEDES-BENZ S-CLASS?
Based on NHTSA data, the 2018 MERCEDES-BENZ S-CLASS is research thoroughly before purchasing. It has 29 complaints, 0 recalls. Always have a pre-purchase inspection done by a qualified mechanic.
What components fail most on the 2018 MERCEDES-BENZ S-CLASS?
The components with the most failures on the 2018 MERCEDES-BENZ S-CLASS are: 1. ENGINE (6 complaints), 2. SERVICE BRAKES (4 complaints), 3. UNKNOWN OR OTHER (3 complaints), 4. STEERING (3 complaints), 5. FORWARD COLLISION AVOIDANCE (2 complaints). ENGINE is the single most-reported problem area with 6 complaints.
What should I know before buying a 2018 MERCEDES-BENZ S-CLASS?
Be cautious of potential mechanical issues, especially with the engine, brakes, and sunroof. Regular maintenance is crucial. The 2018 MERCEDES-BENZ S-CLASS has 29 NHTSA complaints and 0 recalls on record.
How reliable is the 2018 MERCEDES-BENZ S-CLASS?
The 2018 MERCEDES-BENZ S-CLASS receives a reliability score of 87/100, indicating above-average reliability. This is based on 29 owner complaints, 0 recalls, and 4 crash/fire reports in the NHTSA database. Key known issues include Engine Oil Leakage and Service Brakes Wear.
What are the known issues with the 2018 MERCEDES-BENZ S-CLASS?
Known issues with the 2018 MERCEDES-BENZ S-CLASS include: Engine Oil Leakage, Service Brakes Wear, Sunroof Explosion, Ignition Coil Failure. These are based on patterns found across 29 NHTSA complaints.
What are the most common issues with the 2018 Mercedes-Benz S-Class?
Common issues include engine oil leakage, service brake wear, sunroof explosions, and ignition coil failures.
How often do these issues occur?
Issues like engine oil leakage and service brake wear are common, while sunroof explosions and ignition coil failures are less frequent.
What should I do if I experience a sunroof explosion?
Seek immediate assistance and have the vehicle inspected for any potential safety hazards.
Buyer Advice
Our recommendation: Be cautious of potential mechanical issues, especially with the engine, brakes, and sunroof. Regular maintenance is crucial.
NHTSA Data Summary for 2018 Mercedes-Benz S-Class
This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2018 Mercedes-Benz S-Class. The data includes 29 consumer complaints filed by vehicle owners, 0 manufacturer-initiated safety recalls, 2 reported crashes, 2 fire incidents, 1 reported injuries, and safety rating assessments associated with this vehicle.
All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.
Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.
Disclaimer: This analysis is AI-generated from NHTSA public data and does not constitute professional automotive or safety advice. Always verify recall status at NHTSA.gov and consult a qualified mechanic.
Analysis last updated: 2026-05-16