Audi S4 Fourth Generation Specs
|Production||Nov 2004–Jun 2008Jan 2006–2008 (cabrio)|
|Predecessor||Audi B6 S4|
|Successor||Audi B8 S4|
|Body style||4-door saloon/sedan, 5-door estate/wagon (Avant),2-door cabriolet|
|Platform||Volkswagen Group B7 (PL46)|
|Engine||4.2 L V8 40v DOHC|
|Transmission||6-speed Getrag manual, 6-speed ZF 6HP19 tiptronic automatic|
|Wheelbase||2,648 mm (104.3 in) Cabrio: 2,654 mm (104.5 in)|
|Length||4,586 mm (180.6 in) Cabrio: 4,572 mm (180.0 in)|
|Width||1,781 mm (70.1 in) Cabrio: 1,778 mm (70.0 in)|
|Height||1,415 mm (55.7 in) Cabrio: 1,392 mm (54.8 in)|
|Related||Audi B7 A4 Audi B7 RS4 SEAT Exeo|
There are a few mechanical changes, such as revised springs and dampers and, from model year 2007, an updated Torsen T-3 automatically biasing centre differential, featuring a 'default' asymmetric 40:60 front-rear torque split on manual transmission models, along with the later Bosch ESP 8.0 Electronic Stability Programme and gloss black painted brake calipers. The 'Avus-III' roadwheels now became an option, and were replaced by a standard offering 8.0Jx18 inch 'S-design' 7-spoke forged alloy wheel.
Bose sound system is now standard, whereas it was optional on the B6 S4, and an enhanced optional DVD-ROM-based RNS-E satellite navigation system replaces the previous CD-ROM-based RNS-D option.
The new trapezoidal single-frame grille, Bi-Xenon high-intensity discharge lamp (HID) headlamps, L-shaped tail-lamps, quad exhaust tail pipes, and discrete V8 badging below the side repeater indicators help distinguish the B7 from the previous B6 model.
|Options: Equipment included on some trim levels|
|4.2 Petrol||339||5.4 - 5.6||21 - 23||40||£515||4,586|
Audi S4 25 quattro
In June 2005, Audi announced a limited edition run of 250 special edition S4 saloon cars, celebrating 25 years of quattro four wheel drive. This exclusive model was called the Audi S4 25 quattro. Available only in the United States, and only in Avus Silver, the exterior has unique front and rear bumpers, a carbon fibre boot lip spoiler and lower front splitter. 15-spoke DTM alloy wheels, along with optional dealer-fitted 'Audi four-rings' decals for the front doors complete the exterior makeover. Black and grey contrasting interior leathers, along with "quattro" embossed into the Recaro seats, together with an individually numbered exclusive quattro gear shift knob for the manual-only gearbox define the interior changes.
On the mechanical side, the S4 25quattro was the second Audi, after the B7 RS4 to be fitted with the latest Torsen T-3 asymmetric ATB centre differential for its quattro permanent four-wheel drive system. Under normal grip conditions, this is set with a default rearwards torque distribution bias of 40:60 front to rear, and a maximum of 100% torque can automatically be apportioned to the rear axle (and up to 80% to the front) as conditions warrant. The final drive ratios are 3.889.