The Audi S6 Avant (4A, C4) 2.2i 20V Turbo quattro, produced between June 1994 and July 1997, represents a high-performance iteration of Audi’s popular wagon, blending practicality with exhilarating performance. Positioned as the performance variant of the C4-generation Audi A6 Avant, the S6 offered a more potent engine, upgraded suspension, and distinctive styling cues. This model was primarily sold in European markets, catering to buyers seeking a versatile vehicle capable of both family duties and spirited driving. It was a key player in establishing Audi’s reputation for sophisticated, all-weather performance.
Technical Specifications
| Brand | Audi |
| Model | S6 |
| Generation | S6 Avant (4A,C4) |
| Type | 2.2i 20V Turbo (230 Hp) quattro Manual 6-speed |
| Start of production | June, 1994 |
| End of production | July, 1997 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 14.6 l/100 km (16.1 US mpg, 19.3 UK mpg, 6.8 km/l) |
| Fuel consumption (extra urban) | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.8 sec |
| Acceleration 0 – 62 mph | 6.8 sec |
| Acceleration 0 – 60 mph | 6.5 sec |
| Maximum speed | 235 km/h (146.02 mph) |
| Weight-to-power ratio | 7.4 kg/Hp, 135.3 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 205.9 Nm/tonne |
| Power | 230 Hp @ 5900 rpm |
| Power per litre | 103.3 Hp/l |
| Torque | 350 Nm @ 1950 rpm (258.15 lb.-ft. @ 1950 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | AAN |
| Engine displacement | 2226 cm3 (135.84 cu. in.) |
| Number of cylinders | 5 |
| Engine configuration | Inline |
| Cylinder Bore | 81 mm (3.19 in.) |
| Piston Stroke | 86.4 mm (3.4 in.) |
| Compression ratio | 9.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger |
| Valvetrain | DOHC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1700 kg (3747.86 lbs.) |
| Max. weight | 2250 kg (4960.4 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 390 l (13.77 cu. ft.) |
| Trunk (boot) space – maximum | 1310 l (46.26 cu. ft.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load with brakes (12%) | 1650 kg (3637.63 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4797 mm (188.86 in.) |
| Width | 1804 mm (71.02 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2692 mm (105.98 in.) |
| Front track | 1556 mm (61.26 in.) |
| Rear (Back) track | 1525 mm (60.04 in.) |
| Drag coefficient (Cd) | 0.35 |
| Minimum turning circle | 11.4 m (37.4 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent on trapezoidal lever |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 225/50 R16 |
| Wheel rims size | 7.5J x 16 |
Powertrain & Engine Architecture
The heart of the S6 Avant 2.2i 20V Turbo is the Audi AAN engine, a 2.2-liter, inline-five cylinder powerplant. This engine is renowned for its robust construction and impressive performance potential. The AAN utilizes a cast iron block and an aluminum cylinder head, featuring four valves per cylinder (20V) and a dual overhead camshaft (DOHC) design. A key feature is its large turbocharger, coupled with an intercooler, which significantly boosts power output. Fuel delivery is managed by a Bosch Motronic multi-port fuel injection system. The engine’s robust bottom end allowed for significant tuning potential, making it a favorite among enthusiasts. The six-speed manual transmission, sourced from Getrag, provides precise gear changes and effectively channels the engine’s power to all four wheels via Audi’s quattro all-wheel-drive system.
Driving Characteristics
The 230 horsepower and 350 Nm (258 lb-ft) of torque delivered by the AAN engine provide the S6 Avant with brisk acceleration. The 0-60 mph sprint takes approximately 6.5 seconds, and it achieves a top speed of 146 mph. The turbocharger does exhibit some lag at lower RPMs, but once it spools up, the power delivery is strong and linear. The six-speed manual transmission allows drivers to keep the engine in its optimal power band. Compared to the standard A6 Avant’s engine options, the S6 offers a significantly more engaging and rewarding driving experience. While not as raw or visceral as some rear-wheel-drive sports cars, the S6’s quattro system provides exceptional grip and stability, particularly in adverse weather conditions. The suspension is firmer than the standard A6, offering improved handling and reduced body roll.
Equipment & Trim Levels
The S6 Avant typically came well-equipped, reflecting its position as a premium performance model. Standard features included leather upholstery, power-adjustable front seats, a sunroof, and an upgraded audio system. Climate control was also standard. Optional extras included heated front seats, a navigation system (a rarity for the time), and upgraded alloy wheels. The interior trim was typically finished in dark wood or carbon fiber, adding to the sporty ambiance. The exterior was distinguished by subtle but effective styling cues, including a unique front grille, body-colored side skirts, and a rear spoiler.
Chassis & Braking
The S6 Avant’s chassis was specifically tuned to handle the increased power output. It features a stiffer suspension setup compared to the standard A6 Avant, with upgraded shock absorbers and springs. The front suspension utilizes McPherson struts, while the rear employs an independent trapezoidal link setup. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The ABS anti-lock braking system is standard, enhancing safety and control. The quattro all-wheel-drive system distributes power between the front and rear axles as needed, maximizing traction and stability.
Market Reception & Comparison
The Audi S6 Avant 2.2i 20V Turbo was generally well-received by automotive critics. It was praised for its blend of performance, practicality, and all-weather capability. Compared to other performance wagons of the era, such as the BMW 5 Series Touring and the Mercedes-Benz E-Class Estate, the S6 offered a unique combination of turbocharged power and quattro all-wheel drive. Fuel economy, while not a priority for buyers of this vehicle, was reasonable for its performance level. Reliability was generally good, although the turbocharger and associated components could require maintenance over time. Compared to the naturally aspirated A6 variants, the S6 demanded a higher purchase price and potentially higher maintenance costs.
Legacy
The Audi S6 Avant (4A, C4) 2.2i 20V Turbo quattro has become a sought-after classic among Audi enthusiasts. The AAN engine is highly regarded for its durability and tuning potential. Well-maintained examples are becoming increasingly rare and valuable. The car’s combination of performance, practicality, and distinctive styling has ensured its enduring appeal. Today, it represents a significant milestone in Audi’s history, showcasing the brand’s commitment to innovation and performance. The AAN engine continues to be a popular choice for engine swaps and restoration projects, demonstrating its lasting legacy within the automotive community.
