2018 Mercedes-Benz S 450
Problems, Recalls & Reliability Report
Quick Summary
The 2018 Mercedes-Benz S 450 has 8 owner complaints filed with NHTSA — that's 0.1x the segment average of 80. The most common issue is driver assist/cameras problems (25% of all complaints), specifically: the pre-collision safety feature goes off when there is no collision imminent. it is frightening and could actually cause an accident..
8
Total Complaints
0
Recalls Issued
—/5
Safety Stars
0.1x
vs Segment Avg
Known Problems
DRIVER ASSIST/CAMERAS
2 complaints- • THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.
- • TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ S450. WHILE DRIVING 75 MPH WITH THE CRUISE CONTROL ENGAGED, THE AUTOMATIC BRAKING ACTIVATED ON ITS OWN IN TRAFFIC. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL TO DISENGAGE THE CRUISE CONTROL IN ORDER TO DRIVE SAFELY. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF
“THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.”
— NHTSA complaint filing
BRAKES
2 complaints- • I’m reporting this safety concern and seeking advisement from those more knowledgeable than myself on this issue. Recently, as I attempted to actuate the brake of my vehicle. My right foot was entangled with the brake pedal as I moved it from the acceleration pedal to the brake pedal in observance
- • The contact owns a 2018 Mercedes-Benz S450. The contact stated while driving at an undisclosed speed, the contact attempted to depress the brake; however, the vehicle failed to decelerate and slow as needed. The contact stated that the brakes failed to work as needed. The contact stated that the “Se
“I’m reporting this safety concern and seeking advisement from those more knowledgeable than myself on this issue. Recently, as I attempted to actuate the brake of my vehicle. My right foot was entangled with the brake pedal as I moved it from the acceleration pedal to the brake pedal in observance ”
— NHTSA complaint filing
SEATS/RESTRAINTS
1 complaints- • THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.
“THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.”
— NHTSA complaint filing
STEERING
1 complaints- • Steering wheel became extremely stiff to turn and a message that read “steering malfunction increase physical effort” appeared while driving at around 30 mph while in a vacation trip, not only was this extremely unsettling since it happened suddenly but I had to act fast to avoid a collision with ot
“Steering wheel became extremely stiff to turn and a message that read “steering malfunction increase physical effort” appeared while driving at around 30 mph while in a vacation trip, not only was this extremely unsettling since it happened suddenly but I had to act fast to avoid a collision with ot”
— NHTSA complaint filing
OTHER
1 complaints- • I was driving on highway on 7/26 Friday in exit lane when my panoramic sunroof exploded and shattered on me while driving. It sounded like a shogun. Some of the glass came in on me and other part flew out vehicle causing paint damage. I inspected car there was no impact from anything (ie rock, branc
“I was driving on highway on 7/26 Friday in exit lane when my panoramic sunroof exploded and shattered on me while driving. It sounded like a shogun. Some of the glass came in on me and other part flew out vehicle causing paint damage. I inspected car there was no impact from anything (ie rock, branc”
— NHTSA complaint filing
Estimated Repair Costs
Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.
🔍 Pre-Purchase Inspection Checklist
Based on 8 owner complaints for this specific year, here's what to check or ask about:
- ☐DRIVER ASSIST/CAMERAS: THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.
Typically appears around 50K miles. Repair cost ~$500
- ☐BRAKES: I’m reporting this safety concern and seeking advisement from those more knowledgeable than myself on this issue. Recently, as I attempted to actuate the brake of my vehicle. My right foot was entangled with the brake pedal as I moved it from the acceleration pedal to the brake pedal in observance
Typically appears around 50K miles. Repair cost ~$500
- ☐SEATS/RESTRAINTS: THE PRE-COLLISION SAFETY FEATURE GOES OFF WHEN THERE IS NO COLLISION IMMINENT. IT IS FRIGHTENING AND COULD ACTUALLY CAUSE AN ACCIDENT.
Typically appears around 50K miles. Repair cost ~$500
- ☐STEERING: Steering wheel became extremely stiff to turn and a message that read “steering malfunction increase physical effort” appeared while driving at around 30 mph while in a vacation trip, not only was this extremely unsettling since it happened suddenly but I had to act fast to avoid a collision with ot
Typically appears around 50K miles. Repair cost ~$500
- ☐General: Get a pre-purchase inspection from an independent mechanic ($100-$200)
Mercedes-Benz S 450 — Year Comparison
How does 2018 compare to other years? Fewer complaints = more reliable.
Full years-to-avoid analysis →NHTSA Safety Rating
No NHTSA safety rating available
At a Glance
- Complaints
- 8
- Recalls
- 0
- Fire reports
- 0
- Crash reports
- 0
- Injury reports
- 0
- Segment avg
- 80
Check a Specific VIN
See recalls for YOUR 2018 Mercedes-Benz S 450