But to the driver, the AWD system operates invisibly, acting only when it's needed automatically. There's also a penalty in performance. Overall though, these are fairly minor penalties for the extra poor-weather performance that the 330xi offers. Driving impressions Click image to enlarge The 330xi's 3.0 litre inline six cylinder engine has a broad, even powerband that reaches its 6000 rpm redline with ease. Under acceleration, the engine lets out a sporty but muted high-pitched roar, but when cruising it's barely audible.
Outward visibility is good to the front and sides, but the rear deck is quite high.
In addition, if the driver releases the clutch pedal too quickly, there is a 'thunk' from the rear axle, and a bit of fore-aft jerking motion. I didn't have a chance to test the optional 5-speed automatic 'Steptronic' transmission on this car, but on other BMW's, it offers superb performance with the option of clutchless gear shifting if you so desire. I found the steering to be quick, responsive, with just enough boost to be sporty without being difficult to steer. The brakes are a tad sensitive though, requiring careful modulation. The ride is smooth and comfortable on well-paved roads, and impressively, offers superb balance and control over rough, undulating pavement.