* Based on opinions and should be considered as general guidance only.
- Reliability (3)While the M273 engine is generally solid, the complex electronics and Airmatic suspension system are known points of failure as the car ages.
- Maintenance (2)Ownership costs are high due to expensive specialized parts, premium fluid requirements, and the frequent need for expert labor on the air suspension.
- Technology (3)For 2009, the COMAND interface was functional, but by modern standards, the navigation and infotainment system feel clunky and lacks smartphone integration.
- Comfort (4)The cabin features top-tier materials and exceptional sound insulation, but the dramatic sloping roofline severely restricts rear-seat headroom and visibility.
- Dynamics (4)The 5.5L V8 delivers smooth, effortless power with 382 hp, though the steering and air suspension are tuned more for high-speed stability than nimble cornering.