* Based on opinions and should be considered as general guidance only.
- Reliability (3)While generally well-built, some owners have reported issues with electronics and minor mechanical components. Long-term reliability can be a concern compared to some rivals, though major failures are not widespread.
- Maintenance (3)As with most luxury German vehicles, maintenance and repair costs for the E 400 can be significantly higher than average. Routine servicing is expensive, and specialized parts can add to the overall cost of ownership.
- Technology (4)The infotainment system is feature-rich and visually appealing, though it can have a slight learning curve. Advanced driver-assistance systems are comprehensive and well-integrated, enhancing safety and convenience.
- Comfort (5)Exceptional ride quality and a supremely quiet cabin make the E 400 a master of comfort. The seats are supportive and luxurious, and the suspension effectively soaks up road imperfections.
- Dynamics (4)The E 400 offers a refined and composed driving experience, with a powerful V6 engine providing strong acceleration and smooth power delivery. Handling is competent and secure, though it leans more towards comfort than outright sportiness.