Audi S4

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Audi S4
Audi B7 S4 saloon (Japan)
Manufacturer Audi AG
Parent company Volkswagen Group
Also called S4
Production 1991 - present
Assembly Ingolstadt, Germany
Successor Audi S5 (for Convertibles)
Class Compact executive car,
Sports car
Layout Front engine,
quattro permanent four-wheel drive
Related Audi A4, Audi RS4

The Audi S4 is a high performance sport version of the Audi A4 range of cars. The S4 name was originally used for the sport version of the Audi 100.

They are, or have been available as an "Avant", Audi's name for an estate car or station wagon, a saloon or sedan, and a Cabriolet (convertable) version.

Like all Audi S cars, the S4 is only available with Audi's Torsen-based quattro permanent four-wheel drive system. The S4 has a larger more powerful engine, and larger uprated brakes, which are not shared with the remainder of the A4 range.

Contents


[edit] C4 S4 (4A) (1992-1994)

Audi C4 S4 (Typ 4A)
Audi S4 (US)
Production 1992 - 1994
Body style(s) 4-door saloon/sedan
5-door Avant (estate/wagon)
Platform Volkswagen Group C4 platform
Engine(s) 2.2 L I5 20V turbo
4.2 L V8 32V
Transmission(s) 5-speed manual
6-speed manual
4-speed automatic
Wheelbase 2692 mm (106 in)
Length 4790 mm (188.6 in)
Width 1800 mm (70.9 in)
Height 1443 mm (56.8 in)
Related Audi 100 (C4)
See also: Audi Ur-S4 / Ur-S6

Audi was re-configuring its lineup during the early 1990s, and introduced the original S4 (Typ 4A) in 1992 as the performance version of the re-styled Audi 100 (C4) saloon/sedan. Despite being based on the Volkswagen Group C4 platform, and sharing its basic structure with the 100, the S4 effectively took the place of the Audi 200 turbo quattro, which had been discontinued the year before. Being the first in the S4 lineup, it is commonly referred to as the Ur-S4, coming from the German words Ursprünglich (meaning: original).

The S4 was sold worldwide with a turbocharged version of Audi's 2.2 L (2226 cc), 20-valve inline-5 engine developing 230 PS (169 kW/227 bhp) and 350 N·m (258 ft·lbf) of torque. A 280 PS (206 kW/276 bhp) 4.2 L V8 became available to European customers as an option. quattro permanent four-wheel-drive, and a manual transmission (five and six-speed in Europe, five-speed only in North America) were standard equipment, although a 4-speed automatic transmission was available as an option. The most common configuration 2.2 L 5-speed offered good acceleration for its day, achieving 100 km/h (62 mph) in just 6.2 seconds.

After Audi dropped the 100 nameplate, and re-badged the car as A6 in 1994, the S4 became the S6, although the only real changes to the model were minor cosmetic updates, and the addition of a more powerful "S6 Plus" model to the lineup again using the V8 engine. After the first generation A6 was replaced in 1997 by an updated version based on C5 chassis, the S4 and S6 became distinctly separate from one another.

[edit] B5 S4 (8D) (1997-2002)

Audi B5 S4 (Typ 8D)
2001 Audi S4
Production 1997 - 2002
Body style(s) 4-door saloon/sedan
5-door Avant (estate/wagon)
Platform Volkswagen B5 platform
Engine(s) 2.7 L 30V twin-turbo V6
Transmission(s) 6-speed manual
5-speed automatic
Wheelbase 2607 mm (102.6 in)
Length 1997-99: 4483 mm (176.5 in)
2000-02: 176.7 in (4488 mm)
Width 1997-99: 1733 mm (68.2 in)
2000-02: 72.7 in (1847 mm)
Height 1997-99: 1396 mm (55 in)
2000-02 Sedan: 54.9 in (1394 mm)
2000-02 Wagon: 55.8 in (1417 mm)
Related Audi A4
Volkswagen Passat

The second generation S4 (Typ 8D) debuted in 1997, as part of the B5 platform Audi A4 line-up, although it wasn't available in North America until year 2000.

In addition to the saloon/sedan, an estate/wagon version, the Audi S4 Avant, was introduced into the lineup from 1998. Production ceased on the B5 S4 in 2001 although it was still sold together with the next B6 platform generation through 2002 in North America.

Several years after it was sold new, the second generation (B5) S4 remains an enthusiast car, and as featured in the December 2007 issue of Sport Compact Car magazine, a Torque Factory tuned S4 won a comparison test against several other extreme performance cars.[1]

[edit] Powertrain

The B5 S4 had a 2671 cc twin-turbocharged 90° "third-generation" V6 engine with variable valve timing and two side-mounted intercoolers (code AGB), producing 195 kW (265 PS/261 bhp) and 400 N·m (295 ft·lbf). Engine management was by way of a Bosch Motronic ME 7.1 engine control unit, and helped it meet the EU3-D emissions standard. The engine was slightly detuned to meet US emissions regulations, and power stopped at 250 hp (186 kW) in North America.

As in the previous S4, a six-speed manual transmission (01E C90) was standard equipment, as was the Torsen T-2 quattro permanent four-wheel-drive system. A five-speed tiptronic automatic transmission became available for the first time as an option.

The S4 claims acceleration from 0 to 100 km/h (62 mph) in 5.6 seconds and had an electronically-limited top speed of 250 km/h (155 mph), making it both the quickest saloon/sedan in the Audi model line, and among the quickest saloon/sedans in the world at that time.

[edit] Motorsport

A racing form of the car experienced great success in the Speedvision World Challenge with Michael Galati taking the 2001 Speedvision GT title in a Champion Racing S4, with four wins, and helping Audi to its first-ever Manufacturers' Championship. The Audi Sport spec Champion A4 chassis had an RS4 engine, Alcon racing calipers 4pot-front/2pot-rear. Istook Racing also competed with a US Spec S4 engine First APR programming then REVO ECU reflash which translated in an almost 1.5 sec improvement over APR map.

[edit] B6 S4 (8E) (2003-2005)

Audi B6 S4 (Typ 8E)
2004 Audi S4
Production 2003 - 2005
Body style(s) 4-door saloon/sedan
5-door Avant estate/wagon
2-door cabriolet
Platform Volkswagen B6 platform
Engine(s) 4.2 L 40-valve V8
Transmission(s) 6-speed manual
6-speed automatic
Wheelbase 2651 mm (104.4 in)
Length 4575 mm (180.1 in)
Cabrio: 4573 mm (180 in)
Width 1781 mm (70.1 in)
Cabrio: 1778 mm (70 in)
Height 1415 mm (55.7 in)
Avant: 1440 mm (56.7 in)
Cabrio: 1391 mm (54.8 in)
Related Audi A4 (B6)
2005 Audi S4
2005 Audi S4
2004 Audi S4 Avant
2004 Audi S4 Avant

The third generation S4 (Typ 8E) debuted in mid-2003. This was based on the B6 platform used by the Audi A4. Despite having moved to yet another entirely new platform, the S4's most publicized new feature was its engine. It became available in three bodystyles for the 2004 model year: saloon, Avant (estate/wagon) and convertible.

Replacing the 2.7 L twin-turbo V6 engine of the previous generation S4, was a 4.2 L, 40-valve V8, based on the unit from the A8, and producing 344 PS (253 kW/340 hp), making it more potent than the RS2, and nearly as powerful as the B5 RS4.

Road tests conducted by American automotive magazines indicated that it could go from a standstill to 100 km/h (62 mph) in 5.1 seconds, and make it to 200 km/h (124 mph) in slightly over 20 seconds, although doing this led to fuel consumption dipping into single digits, considerably lower than the earlier models, leading to the addition of a $1,700 gas guzzler tax (combined 20.2 mpg) for the 6-speed manual sedan in the United States.

Like its predecessors, the model was standard with a six-speed manual transmission, and quattro permanent four wheel drive system. The Tiptronic transmission remained an option. The B6 platform S4 was replaced by the B7 platform S4 in late-2005.

[edit] B7 S4 (8E) (2005-2008)

Audi B7 S4 (Typ 8E)
2006 Audi S4 "25quattro" special edition.
Production 2005 - 2008;
Body style(s) 4-door saloon/sedan
5-door Avant (estate/wagon)
2-door Cabriolet
Platform Volkswagen B7 platform
Engine(s) 4.2 L 40-valve V8
Transmission(s) 6-speed manual
6-speed automatic
Wheelbase 104.3 in (2649 mm)
Convertible: 104.5 in (2654 mm)
Length 180.6 in (4587 mm)
Convertible: 180.0 in (4572 mm)
Width 70.1 in (1781 mm)
Convertible: 70.0 in (1778 mm)
Height 55.7 in (1415 mm)
Convertible: 54.8 in (1392 mm)
Related Audi A4 (B7)
B7 Audi S4 Avant (US)
B7 Audi S4 Avant (US)

The Audi B7 platform S4 is the most recent version of the vehicle currently on sale, based on the B7 Audi A4, having debuted in late 2005. Although Audi classifies it as a new car, the differences between it and the outgoing B6 S4 are primarily cosmetic, and is still classified by the internal designation: Typ 8E. It has the same engine 4.2 L V8 as the previous generation, producing 344 PS (253 kW) at 7000 rpm.

There are a few mechanical changes, such as revised springs and dampers and, for model years 2008 and later, an updated centre Torsen T-3 differential, featuring a 'default' 40:60 torque split on manual transmission quattro models. The new "corporate" single-frame grill, narrow bi-xenon HID headlamps, "L" tail-lamps, and quad exhaust tips help distinguish the B7 from the previous B6 model.

[edit] B8 S4 (8K) (2008-present)

Audi B8 S4 (Typ 8K)
Production 2008–
Body style(s) 4-door saloon/sedan
5-door Avant (estate/wagon)
Platform Volkswagen B8 (MLB/MLP) platform
Engine(s) 3.0 L supercharged direct injection engine V6 (rumoured)
Transmission(s) 6-speed manual
7-speed s-tronic
Wheelbase 2808 mm (110.6 in)
Length 4703 mm (185.2 in)
Width 1826 mm (71.9 in)
Height 1427 mm (56.2 in); Avant: 1436 mm (56.5 in)
Related Audi A4 (B8)
This article contains information about a scheduled or anticipated future automobile.
It may contain preliminary or speculative information, and may not reflect the final version of the vehicle.

The fifth generation of the Audi S4 (Typ 8K) will be based on the latest B8 Audi A4,[2] built on the Volkswagen B8 (MLB/MLP) platform. It is rumored that the B8 model will revert back to a small displacement forced induction format, utilising an all-new 3.0 litre supercharged powerplant that will sit within the 'vee' of the engine and produce an estimated 350bhp, as revealed by car magazine on June 3, 2008. [3] Despite the lower power figure, the TFSI engine is expected to make the 0-60 sprint in around 5 seconds, marginally quicker than its V8 predecessor.

[edit] See also

[edit] References

  1. ^ "2007 Ultimate Street Car Challenge", 'Sport Compact Car Magazine
  2. ^ AudiWorld.com news page on up and coming B8 S4
  3. ^ "Audi S4 Details Revealed by CAR online magazine", CAR Magazine
  • Audi Self-Study Programme SSP198 - The 2.7-litre V6 biturbo (for the B5 S4)
  • Stephen L. Thompson. "Preview: Audi S4". Car and Driver (March 1992): 79–80. 
  • Arthur St. Antoine. "Magnum Force". Car and Driver (April 1992): 47–56. 

[edit] External links

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