The engineers and product planners decided not to confuse the issue with powertrain or driveline options. They simply offer their best effort, a 3.5-liter V6 which produces 210 hp at 5000 rpm and enough low end torque to make for easy departure from a standing start. This is essentially the same V6 that propels the much heavier Montero sport-utility, and it yields smooth, respectable punch harnessed to the much lighter Diamante. The V6 is paired with an exceptionally smooth-shifting four-speed automatic transmission that includes Mitsubishi's Adaptive Transmission Control Management (ATCM). What this means is that the transmission's computer controls are capable of electronically learning the driver's style and modifying the shifting strategy to gain optimal performance and fuel efficiency as well as smooth power transitions.
Lifting the hood reveals a tidy, well laid-out engine compartment--as long as it's daylight. Night inspections could be a problem, however, since there's no light under there, another small but puzzling omission. It seems even more inconsistent in contrast with the thoughtful battery housing, which is completely encased. It isn't often that a battery actually blows up, but they do sometimes ooze acid at the posts and with this approach, the engine compartment is completely protected from that caustic substance.
While the ride is soft and compliant enough to please luxury car passengers, the suspension is stout enough and responsive enough to be able to handle twisty-turny roads competently. Although the Diamante's overall dynamics are skewed in favor of comfort, the feel is firm, controlled and contemporary. And braking performance is consistent with other cars in this class.
Vision is good from the driver's seat, too--no big blind spots to hinder or annoy. And with controls and gauges well placed, the car feels comfortable and pleasureable to drive as well as responsive.
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