* Based on opinions and should be considered as general guidance only.
- Reliability (2)Early models of the X164 platform are prone to expensive issues, particularly regarding the air suspension bellows, oil leaks, and various electronic sensor failures.
- Maintenance (2)Ownership costs are very high due to the complexity of the German engineering, requiring specialized service and premium-priced replacement parts.
- Technology (4)For 2007, it was a leader with features like the COMAND infotainment system and rear-seat DVD entertainment, though the navigation interface is dated and difficult to use by modern standards.
- Comfort (5)The Airmatic air suspension delivers a cloud-like ride, and the interior is exceptionally quiet with genuine luxury materials and three rows of seating that can actually accommodate adults.
- Dynamics (4)The 335-hp V8 engine provides surprisingly brisk acceleration for a vehicle of this size, and the 4MATIC all-wheel-drive system offers excellent stability, though it still feels heavy in tight corners.