2018 Mercedes-Benz E 400: Reliability Data

Source: NHTSA — 28 complaints
28
Total Complaints
15,000mi
Median Mileage
Unknown Or Other
Top Issue
3
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

1,250 25th Percentile
15,000 Median Mileage
22,777 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Unknown Or Other
5
Electrical System
4
Seat Belts
3
Engine
3
Steering
2
Vehicle Speed Control
1
Electronic Stability Control (Esc)
1
Service Brakes
1
Body
1
Exterior Lighting
1

Severity Assessment

3
Crashes
2
Fires
0
Injuries
0
Deaths

Sample Complaint Reports

"RECENTLY PURCHASED A 2018 MERCEDES-BENZ E400 4MATIC WAGON WITH PREMIUM PACKAGE 3 THAT INCLUDES ALL OF THE AVAILABLE DRIVER ASSISTANCE PROGRAMS (SEMI AUTONOMOUS STEERING, ADAPTIVE CRUISE CONTROL, LANE KEEP ASSISTANCE, BLINDSPOT DETECTION, AUTOMATIC PARKING ASSIST, CROSS TRAFFIC ALERT). ACCORDING TO M..."
"RECENTLY PURCHASED A 2018 MERCEDES-BENZ E400 4MATIC WAGON WITH PREMIUM PACKAGE 3 THAT INCLUDES ALL OF THE AVAILABLE DRIVER ASSISTANCE PROGRAMS (SEMI AUTONOMOUS STEERING, ADAPTIVE CRUISE CONTROL, LANE KEEP ASSISTANCE, BLINDSPOT DETECTION, AUTOMATIC PARKING ASSIST, CROSS TRAFFIC ALERT). ACCORDING TO M..."
"RECENTLY PURCHASED A 2018 MERCEDES-BENZ E400 4MATIC WAGON WITH PREMIUM PACKAGE 3 THAT INCLUDES ALL OF THE AVAILABLE DRIVER ASSISTANCE PROGRAMS (SEMI AUTONOMOUS STEERING, ADAPTIVE CRUISE CONTROL, LANE KEEP ASSISTANCE, BLINDSPOT DETECTION, AUTOMATIC PARKING ASSIST, CROSS TRAFFIC ALERT). ACCORDING TO M..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Unknown Or Other 5 complaints
Median: 1,250 mi
Engine 3 complaints
Median: 21,000 mi

Where Are Complaints Coming From?

Top states by complaint count.

NC: 5 CA: 5 NY: 3 FL: 3 NJ: 3 NM: 2 CT: 2 SC: 1 PA: 1 TN: 1

Who Files Complaints?

3.6%
Original Owners
96.4%
Second+ Owners

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28