2006 Audi S4 review: 2006 Audi S4

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CNET Editors' Rating

4.5 stars Outstanding
  • Overall: 9.0
  • Cabin tech: 9.0
  • Performance tech: 9.0
  • Design: 9.0
Review Date:
Updated on:

The Good The 2006 Audi S4's sophisticated V-8, mated to a solid six-speed manual, delivers steady power throughout its revs, while the Quattro system and associated electronics keep it on the road. And we like Audi's MMI controls for infotainment functions.

The Bad The Bluetooth interaction with our phone was surprisingly limited in the 2006 Audi S4. Ergonomically, the brake pedal was a little high, and the driver armrest interferes with the hand-brake lever.

The Bottom Line The 2006 Audi S4 commands a hefty premium over the standard A4, and although the cabin gadgets are similar, the performance gain is worth it. We had some minor issues, but overall, this is a top tech car.

CNET Editors' Choice Dec '05

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2006 Audi S4

The 2006 Audi S4 attempts to one-up the much-lauded BMW M3 by using the tried-and-true muscle-car practice of stuffing a larger car's V-8 under a smaller car's hood. The current M3 may squirt to 60mph a hair quicker than the S4, but the cachet, not to mention the sound, of the V-8 under its hood will probably make happy buyers out of some would-be M3 customers.

Under the hood, technology such as dual overhead camshafts, variable valve timing, and five valves per cylinder help the 2006 Audi S4's V-8 churn out 340 horsepower. With Audi's stalwart Quattro system driving all four wheels, the S4 remains composed and predictable, and electronic stability controls keep the power from overwhelming the tires on loose surfaces.

The face of the redesigned S4 features the signature Audi chrome-ringed grille, but the car is otherwise discreetly more masculine than the 2006 Audi A4 and pleasantly purposeful to behold. Sporting the bulging wheel arches of the new A4 but with rocker-panel cladding and a small rear spoiler, the S4 is different enough to be discernable but not showy. Our car's understated Light Silver Metallic paint ($475) fit the confident character of the styling; brighter colors will likely make the wide snout stand out more.

With an MSRP of around $46,000 and our car's as-tested price at $56,045, the 2006 Audi S4 is substantially dearer than the V-6-equipped A4, starting at about $36,000 for a Quattro. But the difference is both outwardly visible, if subtly so, and palpable from the behind the wheel. The S4's combination of performance, style, and AWD controllability is well worth the upgrade.

The 2006 Audi S4 impresses with its interior, as we've come to expect from all recent Audis. Materials are good quality, design is tasteful, and the layout and feel of both the mechanical and electronic controls are highly satisfying, with the exception of the hand-brake lever. Overall, it's a minor complaint, but the driver armrest sits over the lever, requiring the former to be lifted to move the latter.

Immediately upon sitting in the bolstered Recaro sport seat and grasping the thick three-spoke steering wheel and leather-clad shifter, the driver anticipates an experience a step beyond that of the average sports sedan. The gauges are large and legible white on black, the speedo and tach separated with an information screen using Audi's usual red digital LED.


We like the MMI control system on Audis, which forgoes trick features for functionality.

The full-color main screen for the multimedia interface (MMI) is crisp, and the system's combination of a main control knob with four surrounding contextual buttons works much better than the iDrive in the 2006 BMW 750Li we recently tested. Audi Navigation Plus ($1,950) offers clear maps, relatively simple settings, control, and display of the next route step on the smaller screen between the main gauges. A row of hard buttons beneath the screen makes switching between the various infotainment systems quick and easy.

Our car was spruced up with the Premium Package ($2,900): a glass sunroof; heated front seats; split spoke-design 18-inch wheels (different 18-inchers are standard); a HomeLink transmitter; autodimming mirrors inside and out; memory functions for seats and outside mirrors; a light- and rain-sensing system that turns on the headlights and adjusts intermittent wiper frequency; and adaptive headlights. Also checked on our car's options list was the Cold Weather Package ($400), featuring heated rear seats and a ski-sack pass-through from the trunk.

A six-CD changer resides behind the glove-box door, an arrangement we like better than trunk-mounted changers for easy loading and unobtrusiveness. Our car came equipped with the Premium Audio Package ($1,500), which upgrades the standard Audi Symphony setup to a Bose system with surround sound and a dynamic noise-compensation feature. A microphone in the cabin regulates the stereo's volume in specific frequencies to compensate for unwanted interference, such as that from passing vehicles. The sound from this system is very refined and doesn't lend itself to pumping out bass to ridiculous levels.


Who needs iPod connectivity when you can bring along a few gigabytes of music on SD cards and plug them directly into the sound system?

The 2006 Audi S4's Premium Audio Package also includes preparation for either XM or Sirius Satellite Radio, controlled via the MMI or steering wheel buttons, as with the other audio features. Also part of the package is Bluetooth phone integration. The Motorola V551 we used for testing linked with the car easily, although interaction was limited to speakerphone usage--phone book information was not displayed, and the car offered no dialing system of its own.

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2006 Audi S4

Part Number: CNET2006AudiS4
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Quick Specifications See All

  • Trim levels quattro
  • Body style sedan
  • Available Engine Gas