It's amazing what a little wood and soft leather will do for the appearance of a car. The Q45's major interior components all are carried over from the original version, but the addition of some subdued wood accents and plusher looking leather seats have made a considerable difference in the cabin's appearance.
Otherwise, everything is near-perfect. The instruments and controls are logically placed, handsome and easy to use, the seats are among the most comfortable and supportive in the automotive world, and sound and climate-control systems perform to the level you'd very reasonably expect in a car that costs more than 50 grand.
There's nothing especially unusual about the Q45's interior. No special fitments, no heads-up displays or built-in blenders to mix drinks with while underway - just the expected array of power assists and comfort and convenience features. What sets this inside space apart from others is the way all the systems look and feel. That's something better explained by a test drive than with words.
It's quiet inside the Q45, too, but the same can be said for the cabins of many other luxury sedans. Some, to be honest, are quieter; every Q45 we've sampled has suffered more from wind noise than do most rivals.
That one quibble aside, the Q45 cossets its occupants in fine style. The engine is only a muted hum at speed, tire noise is well-suppressed and the suspension takes care of irregularities in the pavement before they intrude.
The Q45 driving experience is strongly affected by the model being driven. There are three: base Q45, the Q45t that we drove, and the Q45a, which is endowed with the industry's only active suspension system (called Full-Active Suspension) on a production car. Each of these versions responds to its driver in a different way.
All three share a superb 278-hp V8 engine and electronically controlled 4-speed automatic transmission. Anyone who appreciates potent 8-cylinder powerplants will love this one; it has more than enough power to push the 2-ton Q45 down the road, accelerates with authority either from a full stop or in passing situations, and makes a healthy sound that is music to an enthusiast's ears. It is thirsty, however, using up premium fuel on the highway at an average rate close to what is stated as the EPA city mileage.
The base Q45s have suspension settings biased toward comfort, delivering a smooth ride regardless of road conditions. As a consequence, cornering provokes some body roll. That's the only penalty of having soft springs. Whether accelerating, steering or stopping, the standard Q45 is never less than pleasant to drive.
The Touring Package adds rear-wheel steering, stiffer springs and a rear anti-roll bar. These produce the expected result: a more driver-oriented compromise between ride and handling. Although it was firmer, with quicker responses, our Q45t was a long way from harsh.
We could have, however, done without the Q45t's 4-wheel steering. This feature may be beneficial in some rare in-stances, but the most noticeable effect we found was a slight decrease in steering response.
We suggest you opt for the Q45a. Its Full-Active Suspension system (computer-controlled hydraulic pumps at each wheel) eliminates nosedive during braking and body roll, and it smooths out road surface irregularities. Electronic traction control and a faster-ratio steering rack also are included in the package. In concert, they give the Q45a the best all-around ride and handling.
It's only fair to note that this system adds an extra toll - about $7000 - to the bottom line. But so equipped, the Q45a is a genuine sport sedan, yet still as comfortable as any big cruiser you care to name.