The Audi S6 Avant (4A, C4) 2.2i 20V Turbo, produced between June 1994 and July 1997, represents a compelling blend of performance and practicality within the C4 generation of Audi’s flagship sedan. Positioned as a high-performance variant of the Audi A6 Avant (station wagon), the S6 offered a more potent engine, upgraded suspension, and distinctive styling cues. This particular configuration – the 2.2-liter turbocharged inline-five engine paired with a five-speed manual transmission and Audi’s quattro all-wheel-drive system – was a key offering in European markets, appealing to drivers seeking a versatile and engaging driving experience. It was a relatively short-lived model, superseded by larger displacement engines in later years.
Technical Specifications
| Brand | Audi |
| Model | S6 |
| Generation | S6 Avant (4A,C4) |
| Type (Engine) | 2.2i 20V Turbo (230 Hp) quattro Manual 5-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 (economy) – urban | 14.6 l/100 km (16.1 US mpg, 19.3 UK mpg, 6.8 km/l) |
| Fuel consumption (economy) – extra urban | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| Fuel consumption (economy) – combined | 10.8 l/100 km (21.8 US mpg, 26.2 UK mpg, 9.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.9 sec |
| Acceleration 0 – 62 mph | 6.9 sec |
| Acceleration 0 – 60 mph | 6.6 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 | 5 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 responsiveness. The ‘20V’ designation refers to the four valves per cylinder, enhancing breathing and power output. A single turbocharger, typically a KKK unit, provides forced induction, boosting power and torque significantly over naturally aspirated versions of the same engine. Fuel delivery is managed by a Bosch Motronic multi-port fuel injection system, carefully calibrated to optimize performance and efficiency. The engine’s durability is further enhanced by a cast iron block and a relatively conservative compression ratio of 9.3:1. The five-speed manual transmission, sourced from Getrag, is known for its precise shifts and ability to handle the engine’s substantial torque.
Driving Characteristics
The 2.2i 20V Turbo with a manual transmission delivers a distinctly sporty driving experience. Acceleration to 60 mph takes approximately 6.6 seconds, and top speed is electronically limited to 146 mph. The turbocharger provides a noticeable surge of power in the mid-range, making overtaking maneuvers effortless. While not as brutally fast as later S6 models with V8 engines, the 2.2-liter turbo offers a balanced and engaging driving experience. The quattro all-wheel-drive system provides excellent traction in all weather conditions, enhancing stability and confidence. The five-speed manual transmission allows for precise control over the engine’s power delivery, and the gear ratios are well-matched to the engine’s torque curve.
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, climate control, and an upgraded audio system. Exterior features included unique alloy wheels, a subtle rear spoiler, and distinctive S6 badging. Optional extras included a sunroof, navigation system, and upgraded interior trim. The interior design was typically understated and functional, with a focus on ergonomics and driver comfort.
Chassis & Braking
The S6 Avant featured a sport-tuned suspension, with stiffer springs and dampers compared to the standard A6 Avant. The front suspension utilized McPherson struts, while the rear suspension employed an independent trapezoidal link setup. This configuration provided a good balance between ride comfort and handling precision. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) was standard, enhancing safety and control during hard braking.
Market Reception & Comparison
The S6 Avant 2.2i 20V Turbo was generally well-received by automotive critics, who praised its performance, handling, and practicality. It was often compared to other high-performance station wagons of the time, such as the BMW M5 Touring and the Mercedes-Benz E500 T. While the S6 offered a compelling combination of features, some critics noted that its fuel economy was relatively poor. Compared to the later S6 models with V8 engines, the 2.2-liter turbo offered a more accessible price point and a more manageable level of performance.
Legacy
The Audi S6 Avant 2.2i 20V Turbo has developed a strong following among enthusiasts. The AAN engine is known for its durability and tunability, and many owners have modified their cars to increase power output. While finding well-maintained examples can be challenging, these cars offer a unique and rewarding driving experience. The 2.2i 20V Turbo engine, while superseded by larger displacement units, remains a highly regarded powerplant, celebrated for its character and performance. Today, these cars represent a desirable classic, offering a blend of performance, practicality, and Audi’s renowned build quality.
