The Audi S4 (4A, C4) 4.2 V8 quattro, produced between October 1992 and July 1994, represented Audi’s foray into the high-performance executive sedan market. Positioned as the performance variant of the C4-generation Audi A4, the S4 aimed to deliver a compelling blend of luxury, practicality, and exhilarating performance. It was a key model in establishing Audi’s quattro all-wheel-drive system as a performance differentiator. The C4 platform, also underpinning the Audi 80 and 90, provided a solid foundation for the S4’s enhanced capabilities. This particular variant, equipped with the 4.2-liter V8 engine and a six-speed manual transmission, was the flagship offering, setting the standard for performance within the C4 range.
| Brand | Audi |
| Model | S4 |
| Generation | S4 (4A,C4) |
| Type (Engine) | 4.2 V8 (280 Hp) quattro |
| Start of production | October, 1992 |
| End of production | July, 1994 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 18.9 l/100 km (12.4 US mpg, 14.9 UK mpg, 5.3 km/l) |
| Fuel consumption (extra urban) | 9.3 l/100 km (25.3 US mpg, 30.4 UK mpg, 10.8 km/l) |
| Fuel consumption (combined) | 11.3 l/100 km (20.8 US mpg, 25 UK mpg, 8.8 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.6 sec |
| Acceleration 0 – 62 mph | 6.6 sec |
| Acceleration 0 – 60 mph | 6.3 sec |
| Maximum speed | 247 km/h (153.48 mph) |
| Weight-to-power ratio | 6.2 kg/Hp, 161.8 Hp/tonne |
| Weight-to-torque ratio | 4.3 kg/Nm, 231.2 Nm/tonne |
| Power | 280 Hp @ 5800 rpm |
| Power per litre | 67.1 Hp/l |
| Torque | 400 Nm @ 4000 rpm (295.02 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | ABH |
| Engine displacement | 4172 cm3 (254.59 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 84.5 mm (3.33 in.) |
| Piston Stroke | 93 mm (3.66 in.) |
| Compression ratio | 10.6:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 1730 kg (3814 lbs.) |
| Max. weight | 2280 kg (5026.54 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 510 l (18.01 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 4790 mm (188.58 in.) |
| Width | 1805 mm (71.06 in.) |
| Height | 1420 mm (55.91 in.) |
| Wheelbase | 2690 mm (105.91 in.) |
| Front track | 1565 mm (61.61 in.) |
| Rear (Back) track | 1530 mm (60.24 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Spring Strut |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 225/55 R16 |
Powertrain & Engine Architecture
The heart of the S4 was the ABH engine, a 4.2-liter naturally aspirated V8. This engine, derived from Audi’s earlier V8 designs, featured a 90-degree V-angle for optimal balance and smoothness. It employed multi-port fuel injection and a dual overhead camshaft (DOHC) valvetrain, contributing to its responsive power delivery. The engine produced 280 horsepower at 5800 rpm and 400 Nm (295 lb-ft) of torque at 4000 rpm. The six-speed manual transmission, a crucial component of the S4’s driving experience, provided precise gear changes and allowed the driver to fully exploit the engine’s power. The transmission’s ratios were carefully selected to balance acceleration and cruising efficiency. The engine’s longitudinal mounting and the quattro all-wheel-drive system worked in concert to provide excellent traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The S4 4.2 V8 offered a distinctly engaging driving experience. The naturally aspirated V8 delivered a linear power curve, providing strong acceleration throughout the rev range. While not as overtly aggressive as turbocharged competitors, the S4’s power was readily accessible and predictable. The six-speed manual transmission allowed for precise control, and the quattro all-wheel-drive system inspired confidence in all conditions. Compared to the standard A4 1.8L or 2.0L models, the S4 offered a significant performance upgrade. The S4’s suspension was tuned for a balance between comfort and handling, providing a firm but not harsh ride. The steering was precise and well-weighted, contributing to a connected feel with the road. The 0-60 mph time of around 6.3 seconds was competitive for its era.
Equipment & Trim Levels
The S4 4.2 V8 was relatively well-equipped, reflecting its position as Audi’s performance flagship. Standard features typically included leather upholstery, power windows and locks, central locking, and an upgraded audio system. Optional extras included a sunroof, heated front seats, and upgraded alloy wheels. The interior design was functional and understated, with a focus on ergonomics and build quality. The dashboard featured a comprehensive instrument cluster, providing the driver with essential information about the vehicle’s performance. The S4’s trim level was generally consistent, with limited options for customization beyond the available extras.
Chassis & Braking
The S4’s chassis was based on the Audi 80/A4 platform, but with several enhancements to improve handling and stability. The suspension featured stiffer springs and dampers, along with a larger diameter stabilizer bar. The braking system consisted of ventilated discs at the front and solid discs at the rear, providing ample stopping power. Anti-lock braking system (ABS) was standard. The quattro all-wheel-drive system distributed power between the front and rear axles as needed, maximizing traction and minimizing wheelspin. The S4’s chassis was designed to handle the increased power and torque of the V8 engine, providing a stable and predictable driving experience.
Market Reception & Comparison
The Audi S4 4.2 V8 was generally well-received by automotive critics. It was praised for its powerful engine, engaging driving dynamics, and luxurious interior. However, some critics noted its relatively high price and fuel consumption. Compared to rivals such as the BMW M3 and Mercedes-Benz 190E 2.5-16, the S4 offered a different character. The M3 was known for its sharper handling and more focused performance, while the 190E 2.5-16 offered a blend of performance and luxury. The S4 distinguished itself with its all-wheel-drive system and smooth, powerful V8 engine. Fuel economy was a notable drawback, averaging around 20.8 US mpg in combined driving.
Legacy
The Audi S4 4.2 V8 quattro holds a significant place in Audi’s history as a pioneering performance sedan. The ABH engine, while not without its maintenance requirements, proved to be a durable and reliable powerplant when properly maintained. Today, the C4 S4 is a sought-after classic among Audi enthusiasts. Its combination of performance, luxury, and all-wheel-drive capability continues to appeal to collectors and drivers alike. Finding well-maintained examples can be challenging, and maintenance costs can be higher than for more modern vehicles. However, the S4 4.2 V8 remains a rewarding and engaging driving experience, representing a high point in Audi’s early performance car development.
