2006 Audi S4

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$4,840–$16,248 Inventory Prices
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Key Specs
Our Take
Overview
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Reviews
Safety & Recalls
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Key Specs

of the 2006 Audi S4. Base trim shown.

Our Take

From the Cars.com Vehicle Test Team

The Good

  • Exuberant performance
  • Handling
  • Refinement
  • Ride on smooth pavement
  • Seat comfort and support

The Bad

  • Manual-gearbox operation
  • Some driveline whine with manual
  • Wind rush in convertible with top down
  • Fuel economy
  • Backseat legroom

Notable Features of the 2006 Audi S4

  • 340-hp, 4.2-liter V-8
  • Manual or automatic
  • Quattro AWD
  • Three body styles
  • High-performance capabilities

2006 Audi S4 Overview

By Cars.com Editors
Vehicle Overview
A high-performance S4 sedan and S4 Avant wagon rejoined the Audi lineup for 2004. Both pack a 4.2-liter V-8 that produces 340 horsepower. A six-speed-manual gearbox or a six-speed-automatic transmission with a manual-shift provision can be installed.

During the 2004 model year, Audi launched an S4 Cabriolet convertible. Other than the availability of Bluetooth wireless capability and a sporty new S-line series for regular A4 models, little has changed for 2006.

Quattro all-wheel drive is standard on all S4 models. A Torsen torque-sensing center differential helps send power to the wheels with the most traction. The extensive use of aluminum in the suspension results in low unsprung mass.
(Skip to details on the: S4 Avant | S4 Cabriolet)


Exterior
Xenon high-intensity-discharge headlights flank the S4's double grille, which features unique S-model execution. Large front air intakes are installed, and the sedan receives a trunk-mounted spoiler. AVUS forged alloy wheels hold 18-inch tires, and the side mirrors have aluminum accents. The S4's sport suspension includes stiffer shocks and springs, stronger stabilizer bars and a lowered ride height.

Interior
The S4 sedan features a 60/40-split, folding rear seat and holds five people. The driver faces gray instruments and a leather-wrapped three-spoke steering wheel. Tiptronic shift paddles are installed on models equipped with the automatic transmission. Silk Nappa leather upholstery is used, and the Recaro spo...
Vehicle Overview
A high-performance S4 sedan and S4 Avant wagon rejoined the Audi lineup for 2004. Both pack a 4.2-liter V-8 that produces 340 horsepower. A six-speed-manual gearbox or a six-speed-automatic transmission with a manual-shift provision can be installed.

During the 2004 model year, Audi launched an S4 Cabriolet convertible. Other than the availability of Bluetooth wireless capability and a sporty new S-line series for regular A4 models, little has changed for 2006.

Quattro all-wheel drive is standard on all S4 models. A Torsen torque-sensing center differential helps send power to the wheels with the most traction. The extensive use of aluminum in the suspension results in low unsprung mass.
(Skip to details on the: S4 Avant | S4 Cabriolet)


Exterior
Xenon high-intensity-discharge headlights flank the S4's double grille, which features unique S-model execution. Large front air intakes are installed, and the sedan receives a trunk-mounted spoiler. AVUS forged alloy wheels hold 18-inch tires, and the side mirrors have aluminum accents. The S4's sport suspension includes stiffer shocks and springs, stronger stabilizer bars and a lowered ride height.

Interior
The S4 sedan features a 60/40-split, folding rear seat and holds five people. The driver faces gray instruments and a leather-wrapped three-spoke steering wheel. Tiptronic shift paddles are installed on models equipped with the automatic transmission. Silk Nappa leather upholstery is used, and the Recaro sport seats have 12-way power adjustment.

All S4s are prewired for either Sirius or XM Satellite Radio. Options include a navigation system, heated front seats and a 215-watt Bose premium sound system.


Under the Hood
Audi's 4.2-liter V-8, which is also used in the automaker's larger models, was modified to fit into the S4's compact engine compartment. Developing 340 hp at 7,000 rpm, the V-8 produces 302 pounds-feet of torque at 3,500 rpm. Audi claims the S4 can accelerate from zero to 60 mph in 5.3 seconds when equipped with the six-speed-manual gearbox. A specially tuned exhaust system is installed. A six-speed-automatic transmission that features a manual-shift provision is available.

Safety
Antilock brakes have front and rear electronic differential locks and electronic brake-force distribution. Standard side curtain-type airbags cover the entire side-window area. Seat-mounted side-impact airbags for front occupants are standard, and rear-seat side-impact airbags are optional. Height-adjustable front seat belts have load limiters.

S4 Avant
Capable of seating five people, the S4 Avant wagon uses the same powertrain as the S4 sedan. Aluminum roof rails are installed. Avant models have a dual-loading cargo floor, a full-size cargo cover and a protective net. Back to top

S4 Cabriolet
Audi already had an A4 convertible in its lineup but chose to add a high-performance S4 edition as a mid-2004 model. The four-passenger convertible's grille is different from the sedan's. In addition, the exhaust pipes are larger, and a rear spoiler isn't used on the composite trunklid. Powertrain details for the S4 Cabriolet are the same as the sedan's. In models equipped with the automatic transmission, paddle shifters are included for manual gear changes. Audi claims a 0-to-60-mph acceleration time of 5.8 seconds with the manual gearbox.

Structural refinements in the S4 convertible are found in its sills, A-pillars, under the rear seat and in the double bulkhead behind the backseat. Sensors in the active rollover protection system detect an imminent rollover and deploy protective hoops behind the rear seats. The power fabric top contains a heated glass rear window.

The quick, capable S4 Cabriolet rides and handles as if it's almost gliding atop the pavement, without a hint of heaviness. Little steering effort is needed, but the open-top S4 responds instantly and confidently once you get past that sensation of lightness. Acceleration with the manual shift falls short of startling, but it comes close — both from a standstill and when passing or merging. Shifts demand some finesse to avoid jerkiness.

The ride is almost gentle on smooth surfaces, but roughness turns up as the pavement gets harsher. Wind rush with the top down can get nasty, but the S4 convertible feels solid even on undulating pavement. Backseat legroom is rather sparse, and trunk space is modest. Back to top



Latest 2006 S4 Stories

Consumer Reviews

Exterior Styling
(4.6)
Performance
(4.9)
Interior Design
(4.6)
Comfort
(4.1)
Reliability
(4.2)
Value For The Money
(4.6)

What Drivers Are Saying

(5.0)

Love this audi s4 quattro wagon and A6 wagon

by Ironhead86 from Centralia on September 16, 2018

My 1st was a 2001 A6 2.8L quattro avanti it now has 200,000 miles still runs like a champ uses a little oil. I've been on all maintenance couldn't ask for a better car. Oops yes I can I just bought a ... Read full review

(5.0)

I have never loved a car more

by sharrisct25 from Rockland, NY on August 15, 2018

This car is simply a joy to drive. The only negative about this car is that it is not cheap to maintain. It drinks a lot of gas and requires pricey parts/lubricants. However if you are reasonably ... Read full review

Safety & Recalls

Recalls

The 2006 Audi S4 currently has 2 recalls

Crash and Rollover Test Ratings

The 2006 Audi S4 has not been tested.

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Cars.com Car Seat Check

Certified child passenger safety technicians conduct hands-on tests of a car’s Latch system and check the vehicle’s ability to accommodate different types of car seats. The S4 received the following grades on a scale of A-F.*
* This score may not apply to all trims, especially for vehicles with multiple body styles that affect the space and design of the seating.

Warranty FAQs

What is a Bumper-to-Bumper warranty?

Often called a basic warranty or new-vehicle warranty, a bumper-to-bumper policy covers components like air conditioning, audio systems, vehicle sensors, fuel systems and major electrical components. Most policies exclude regular maintenance like fluid top offs and oil changes, but a few brands have separate free-maintenance provisions, and those that do offer them is slowly rising. Bumper-to-bumper warranties typically expire faster than powertrain warranties.

What is a Powertrain warranty?

Don't be misled a 10-year or 100,000-mile powertrain warranty doesn't promise a decade of free repairs for your car. It typically covers just the engine and transmission, along with any other moving parts that lead to the wheels, like the driveshaft and constant velocity joints. Some automakers also bundle seat belts and airbags into their powertrain warranties. With a few exceptions, powertrain warranties don't cover regular maintenance like engine tuneups and tire rotations.

What is included in Roadside Assistance?

Some automakers include roadside assistance with their bumper-to-bumper or powertrain warranties, while others have separate policies. These programs cover anything from flat-tire changes and locksmith services to jump-starts and towing. Few reimburse incidental costs like motel rooms (if you have to wait for repairs).

What other services could be included in a warranty?

Some automakers include free scheduled maintenance for items such as oil changes, air filters and tire rotations. Some include consumables including brake pads and windshield wipers; others do not. They are typically for the first couple of years of ownership of a new car.

What does CPO mean?

A certified pre-owned or CPO car has been inspected to meet minimum quality standards and typically includes some type of warranty. While dealers and third parties certify cars, the gold standard is an automaker-certified vehicle that provides a factory-backed warranty, often extending the original coverage. Vehicles must be in excellent condition and have low miles and wear to be certified, which is why off-lease vehicles feed many CPO programs.

See also the latest CPO incentives by automaker