2018 Mercedes-Benz E-Class Common Problems & Defect Telemetry
Authoritative defect intelligence synthesized from 66 verified NHTSA owner complaints, 0 federal safety recalls, and interquartile failure mileage telemetry.
The 2018 Mercedes-Benz E-Class receives a 7/10 MazicBay Reliability Index based on 66 verified NHTSA federal complaints and 0 safety recalls. The primary reported failure mode is Engine Stalling, Oil Consumption & Cooling Defect Reports with a median failure point at 16,000 miles (IQR: 9,000 – 26,975 mi). Out-of-warranty repairs benchmark at $950 – $3,200 .
14.7 complaints / 10k sold
Verified US federal records
Crash, fire & stall audit
0 Active / Free Remedies
Top Reported Problem Clusters (6)
Engine Stalling, Oil Consumption & Cooling Defect Reports
- Engine sudden stall / hesitation while driving
- Abnormal oil burning / consumption
- Check Engine Light (MIL) flashing
- Engine overheating / coolant loss
“Variable Valve Timing Camshaft KNOWN DEFECT rendering the car unusable at only 100K miles.”
“The digital dash, which shows my speed, mileage, engine temperature, rims and fuel level goes blank. Then comes on for a few seconds and goes dark again. Vehicle only has 43k miles. MB dealer said this is not uncommon condition with the 2018 mb e400. Car is not safe to drive. ...”
“The car did not give any warning before this issue came about. A matter of fact when I took it to the mechanic they were unable to do a diagnostic test because there were no error messages and check engine light never came on. After taking it to the dealership they were able t...”
Electric Power Steering Assist & Suspension Noise Reports
- Sudden loss of electric power steering assist
- Steering wheel pull or highway wander
- Clunking / knocking noise over bumps
“The contact owned a 2018 Mercedes-Benz E300. The contact stated that while driving 30 MPH, another vehicle leaving the parking lot pulled in front of the contact's vehicle, and the contact's vehicle crashed into the side of the other vehicle. The air bags failed to deploy. The...”
“When taking curves the vehicle is making a cracking noise but, mechanic said they don’t see anything. My W213 Mercedes Benz E300 just like all other Mercedes is have a “Crankcase” issue, it failed the engine keep revving but, not catching speed. I’ve seen multiple Mercedes is ...”
“Two problems: 1. Axel grease found on carport cement multiple times. Mercedes refuses to look at the wheel bearings or axel. 2. Automatic steering wheel adjustment makes clunking noise. Mercedes refuses to replace until it fails. Both of those items should be covered under war...”
Electrical Parasitic Drain, Infotainment & Harness Reports
- Unexplained battery drain after sitting overnight
- Infotainment display / instrument cluster blackouts
- Accessory malfunction / alternator fault warnings
“The digital dash, which shows my speed, mileage, engine temperature, rims and fuel level goes blank. Then comes on for a few seconds and goes dark again. Vehicle only has 43k miles. MB dealer said this is not uncommon condition with the 2018 mb e400. Car is not safe to drive. ...”
“The car did not give any warning before this issue came about. A matter of fact when I took it to the mechanic they were unable to do a diagnostic test because there were no error messages and check engine light never came on. After taking it to the dealership they were able t...”
“In April 2022, I purchased a 2018 Mercedes-Benz E300 4MATIC from CarMax in Tinley Park, Illinois. After the purchase, I discovered several unresolved issues that compromised the vehicle's safety and reliability. Key components, including the battery and alternator, were defect...”
Service Brakes, ABS Actuator & Master Cylinder Reports
- Spongy or hard brake pedal travel
- ABS / Brake warning light illuminated
- Extended stopping distance / pedal vibration
“I am filing a complaint regarding the loss of safety-related and remote vehicle features on my 2018 Mercedes-Benz E 400 due to discontinued cellular connectivity between Mercedes-Benz and T-Mobile, effective 12/31/2025. This vehicle is paid for, has low mileage, and is otherwi...”
“This is NOT about my car with the VIN that I described. It is to report that my car saved my life thanks to ability to brake by itself when detecting accident. 2 months ago I almost collided with Tesla Cybertruck!. The reason that I almost was hit was that Tesla driver didn't ...”
“TL* THE CONTACT OWNS A 2018 MERCEDES BENZ E400. THE CONTACT STATED THAT THEY WERE SMELLING A BURNING ODOR EMITTING FROM THE ENGINE OF THE VEHICLE. THE CONTACT STATED THAT WHEN THE AUTOMATIC DRIVING WAS ACTIVATED THE VEHICLE WOULD ACCELERATE TO HIGHER SPEEDS. THE CONTACT WOULD ...”
Transmission Hesitation, Hard Shifting & Slipping Reports
- Hard gear shifts / delayed engagement into Drive/Reverse
- Transmission shudder / jerking under acceleration
- Transmission slipping between gears
“The contact owns a 2018 Mercedes Benz E Class. The contact stated that while driving stopped at a residential gate, the gear was shifted and skipped from g1 to g3., shifting itself to neutral. In another incident, when at a stop light or stop sign, the vehicle stalled. The veh...”
“The car did not give any warning before this issue came about. A matter of fact when I took it to the mechanic they were unable to do a diagnostic test because there were no error messages and check engine light never came on. After taking it to the dealership they were able t...”
“Vehicle went into limp mode at 83,000 miles and it was due to the electronic valve body failing within the transmission. Dealership mentioned it shouldn’t happen in a vehicles lifetime, this includes maintenance at the right interval (60,000 miles), which mine was. I was quote...”
Airbag Occupant Detection & Inflator Defect Reports
- SRS Airbag warning lamp illuminated
- Passenger occupant classification sensor failure
- Seat belt retractor lockup
“The driver-side seat belt retractor on my 2018 Mercedes-Benz E400 (W213) has failed to fully retract, leaving significant slack across the driver's chest and lap. An authorized Mercedes-Benz dealer has diagnosed the issue as a failed seat belt motor. This component is part of ...”
“The contact owned a 2018 Mercedes-Benz E300. The contact stated that while driving 30 MPH, another vehicle leaving the parking lot pulled in front of the contact's vehicle, and the contact's vehicle crashed into the side of the other vehicle. The air bags failed to deploy. The...”
“Passenger seatbelt does not latch to the buckle. Therefore I am unable to have passengers in my vehicle. And when I do it becomes a huge safety issue. No mechanic can seem to figure out what is wrong with it.”
Pre-Purchase Inspection Checklist for 2018 Mercedes-Benz E-Class
Before purchasing a used 2018 Mercedes-Benz E-Class, perform the following targeted inspections based on reported federal defect patterns:
Scan the OBD-II port under the dash for pending freeze-frame codes (e.g. P0300 misfires, P0087 fuel rail pressure, P0420 catalytic efficiency).
Test vehicle at low-speed stop-and-go and highway merges. Check for delayed reverse engagement or gear shift shudder between 2nd and 3rd gears.
Verify that all 0 NHTSA safety recall campaigns have been performed by an authorized dealership using the VIN.
Ensure the instrument cluster, center screen, and auxiliary charging ports operate with stable 12.0V–14.4V alternator voltage.
Defect & Reliability Q&A: 2018 Mercedes-Benz E-Class
Is the 2018 Mercedes-Benz E-Class a reliable used car?
The 2018 Mercedes-Benz E-Class earns a 7/10 MazicBay Reliability Index based on 66 federal owner reports. Vehicles maintained under factory service schedules exhibit strong longevity past 150,000 miles.
What is the most frequent defect reported on the 2018 Mercedes-Benz E-Class?
The leading complaint category is Engine Stalling, Oil Consumption & Cooling Defect Reports, with a median failure point around 16,000 miles (IQR: 9,000 – 26,975 mi).
Are there free recall repairs available for the 2018 Mercedes-Benz E-Class?
Yes, the NHTSA records 0 safety recall campaign(s) for this model year. All safety recalls are performed 100% free of charge by authorized franchise dealerships regardless of vehicle warranty status.