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Try splitting a market segment. That is, encapsulate the positives of both ends with none of the negatives. The Audi A6 does it deftly, bridging the space between the midsize A4 and full-size A8. Naturally, it shares engines with both, a 3.2L V-6 and a 4.2L V-8. But for 2009, it receives something in between: Audi's new supercharged 3.0L V-6.
Underhood the 2009 Audi A6 3.0T, the supercharger provides 11.6psi maximum boost to produce 300 hp and 310 lb-ft of torque. Max torque is available from 2500 rpm to 5100 rpm, where max horsepower starts and stays until the 6800 rpm redline. The result is eyebrow-raising acceleration as you pull the six-speed automatic's paddle shifters and watch as the digital speedometer slot-machines into triple digits. And that seat-of-the-pants sensation translates to the hard data: Acceleration to 60 mph takes 5.4 sec, just a tenth off the pace of the outgoing Nissan 350Z Track. Sure, the Z reaches the quarter-mile mark a little over a tenth faster, but this A6 is an inconspicuous, all-wheel-drive, 4139-lb sedan.
Audi is keen on that unassuming nature. The Roots-type blower sits concealed between the cylinder banks of the V-6. Hood popped, there's no indication of a power adder - save for the "TFSI" misnomer. There's no belt whine at speed, either. The engine fires in silenced, but powerful blasts. It's quiet and deceivingly quick -- a good combination for, say, a spy...Continued
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