2026 Mercedes-Benz E 450 4MATIC Problems
Owner-reported complaints filed with NHTSA, grouped by component
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What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2026 Mercedes-Benz E 450 4MATIC, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Driver assistance150.0%
- Exterior lighting150.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
* before and after delivery vehicle had screen back out. All safety and non safety warnings disabled * car was repaired 4 times at dealership for more than 10 days. * After initial repair in November and December 2025 In March 7 2026 different electrical waring failure auto breaking, forward Collison parking Collison blind spot lane * this lead to minor accident Day after failure. March 8th * This repair needed SRS module and Wiring Harness replacement *on Our request Mercedes and Dealership downloaded data but would not give us. * Dealership charged us for Repair unfair practice * Similar problems few cars were recalled . If they would have paid attention to wearying harness many problems would have resolved early we would not have spent $ 5500 plus *We requested on Board data. Dealership downloaded but would not give as we were correct. *After multiple request they send recall letter but say no need to any thing once wrong they had to replace screen and later wiring harness
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
* before and after delivery vehicle had screen back out. All safety and non safety warnings disabled * car was repaired 4 times at dealership for more than 10 days. * After initial repair in November and December 2025 In March 7 2026 different electrical waring failure auto breaking, forward Collison parking Collison blind spot lane * this lead to minor accident Day after failure. March 8th * This repair needed SRS module and Wiring Harness replacement *on Our request Mercedes and Dealership downloaded data but would not give us. * Dealership charged us for Repair unfair practice * Similar problems few cars were recalled . If they would have paid attention to wearying harness many problems would have resolved early we would not have spent $ 5500 plus *We requested on Board data. Dealership downloaded but would not give as we were correct. *After multiple request they send recall letter but say no need to any thing once wrong they had to replace screen and later wiring harness
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .