The new 2005 audi a4: technology, engines and wheels!

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The 2005 Audi A4 3.0 runs among the more powerful cars in its class with its aluminum 3.0-liter V6 engines. It's rated 220 horsepower at 6300 rpm with 221 pounds-feet of torque. By comparison, the BMW 330i and Mercedes C320 make 225 horsepower, 214 pounds-feet of torque, and 215 horsepower, 221 pounds-feet, respectively.

Audi remains the only luxury carmaker with advanced five-valve-per-cylinder technology across its product line, a setup that allows the engine to breathe freely. Both the A4 3.0 and A4 1.8T earn California's Ultra Low Emissions Vehicle (ULEV) certification. Like everything else about the A4 3.0, the V6 engine is very smooth. Press down on the throttle and power comes on linearly, evenly. It does not paste you to the back of the seat, but it delivers solid torque throughout the rev range. Variably phased intake and exhaust camshafts and variable-length intake runners optimize air/fuel delivery, boosting horsepower and maintaining 90 percent of peak torque from 2200-5200 rpm. So there's a deep well of power available whether you're winding up a country road or just cruising along. Jab the gas pedal in any situation, and the A4 responds immediately. With the six-speed manual, the A4 3.0 is a match for BMW's 330i, long the performance benchmark in this class.

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The six gear ratios are nicely matched if you want to shift frequently and really work the audi a4 engine. Yet the V6 is flexible enough that you can shift less frequently, allowing the engine torque pull the car along. But only rarely will you fall into the passive mode at the wheel of an A4. More often than not you'll want to stretch it. The six-speed itself is a nice gearbox, though not the easiest to coordinate with the clutch for smoothness. An Audi A4 quattro with the six-speed manual can accelerate from 0 to 60 mph in 6.9 seconds and can turn the standing quarter-mile in 15.2 seconds.

That's comparable to the performance of a BMW 330i. If you prefer an automatic transmission, you have two options: an A4 quattro (all-wheel drive) with a more traditional five-speed Tiptronic automatic, or a front-drive A4 with Audi's Multitronic continuously variable transmission (CVT). The CVT was designed to handle the high torque load of the 3.0-liter V6. It's lighter than conventional automatics, has fewer moving parts, and theoretically fewer things to go wrong. And, theoretically speaking, it always provides the optimum ratio, at any engine speed, any vehicle speed. In terms of real-world performance, an A4 3.0 FronTrak with the CVT accelerates as quickly as an A4 3.0 Quattro with the six-speed, according to Audi, and gets about the same mileage as an A4 with a manual transmission. The CVT takes some getting used to, however.

Its internal clutch can take a moment to engage and respond. To the driver, this can feel like sloppiness in the drivetrain. Depending on circumstances, you get rolling too slowly, or with a jerk, and working the throttle can require some practice. It's really a matter of getting used to the CVT's different behavior. Audi has programmed its CVT with six pre-defined ranges that act like gears. The CVT can be managed by a Tiptronic-style sequential selector, so drivers can operate it like a conventional automatic with a sport shifter. We recommend driving the CVT before buying it. Having said all that, it works great and is one of the best CVTs available.