The Audi A6 Avant (4A, C4) 2.8 V6 30V quattro, produced between October 1995 and 1997, represents a sophisticated iteration of Audi’s mid-size executive wagon. Positioned as a premium offering within the C4 A6 range, it combined the practicality of a station wagon with the performance of a V6 engine and the security of Audi’s quattro all-wheel-drive system. This variant occupied a higher tier in the A6 lineup, appealing to buyers seeking a blend of luxury, space, and all-weather capability. It was built on the Audi 1HX0/A3 platform, shared with other Volkswagen Group vehicles of the era.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Avant (4A,C4) |
| Type (Engine) | 2.8 V6 30V (193 Hp) quattro |
| Start of production | October, 1995 |
| End of production | 1997 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 13 l/100 km (18.1 US mpg, 21.7 UK mpg, 7.7 km/l) |
| Fuel consumption (economy) – extra urban | 7.6 l/100 km (30.9 US mpg, 37.2 UK mpg, 13.2 km/l) |
| Fuel consumption (economy) – combined | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.2 sec |
| Acceleration 0 – 62 mph | 8.2 sec |
| Acceleration 0 – 60 mph | 7.8 sec |
| Maximum speed | 226 km/h (140.43 mph) |
| Weight-to-power ratio | 8.3 kg/Hp, 120.6 Hp/tonne |
| Weight-to-torque ratio | 5.7 kg/Nm, 175 Nm/tonne |
| Power | 193 Hp @ 6000 rpm |
| Power per litre | 69.6 Hp/l |
| Torque | 280 Nm @ 3200 rpm (206.52 lb.-ft. @ 3200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | ACK |
| Engine displacement | 2771 cm3 (169.1 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 82.5 mm (3.25 in.) |
| Piston Stroke | 86.4 mm (3.4 in.) |
| Compression ratio | 10.6:1 |
| Number of valves per cylinder | 5 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Coolant | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 1600 kg (3527.4 lbs.) |
| Max. weight | 2150 kg (4739.94 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 | 1783 mm (70.2 in.) |
| Height | 1440 mm (56.69 in.) |
| Wheelbase | 2692 mm (105.98 in.) |
| Front track | 1520 mm (59.84 in.) |
| Rear (Back) track | 1524 mm (60 in.) |
| Minimum turning circle (turning diameter) | 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 | Semi-independent, 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 | 205/60 R15 |
| Wheel rims size | 6J x 15 |
Powertrain & Engine Architecture
The heart of the A6 Avant 2.8 V6 quattro is the ACK engine, a 2.8-liter naturally aspirated V6. This engine is a 30-valve design, featuring dual overhead camshafts (DOHC) and five valves per cylinder. The ACK engine utilizes a Bosch Motronic engine management system and multi-port fuel injection, delivering a balance of power and efficiency. The engine’s 90-degree V-angle contributes to smooth operation and inherent balance. The 2771cc displacement is achieved with a bore of 82.5mm and a stroke of 86.4mm. The 10.6:1 compression ratio further enhances performance. The engine produced 193 horsepower at 6000 rpm and 280 Nm (206.52 lb-ft) of torque at 3200 rpm. The engine is longitudinally mounted, driving all four wheels through Audi’s renowned quattro all-wheel-drive system. The transmission is a 5-speed manual, providing direct control over the engine’s power.
Driving Characteristics
The 2.8 V6 quattro offered a compelling driving experience. While not as overtly sporty as some of its rivals, it provided ample power for comfortable and confident cruising, as well as brisk acceleration. The 0-60 mph time of around 7.8 seconds was respectable for the era. The quattro system provided excellent traction in all weather conditions, enhancing stability and control. The 5-speed manual transmission allowed for precise gear selection, although the gear ratios were geared towards comfortable highway driving rather than outright performance. Compared to the more economical 1.8L four-cylinder versions, the 2.8 V6 offered significantly more power and refinement. However, it lacked the low-end torque of the later TDI diesel engines. The V6’s power delivery was smooth and linear, making it easy to modulate and control.
Equipment & Trim Levels
The A6 Avant 2.8 V6 quattro typically came well-equipped, reflecting its position as a premium model. Standard features included power windows, power locks, central locking, and air conditioning. Interior upholstery was typically cloth, although leather was available as an option. The dashboard featured a clean and functional design, with easy-to-read gauges. Optional extras included a sunroof, upgraded audio system, and heated front seats. The trim level often included wood trim accents, adding to the luxurious feel of the interior. Safety features included ABS anti-lock brakes and a driver’s airbag.
Chassis & Braking
The A6 Avant featured an independent McPherson strut front suspension and a semi-independent coil spring rear suspension. This setup provided a good balance of ride comfort and handling. The front suspension incorporated an anti-roll bar to reduce body roll during cornering. Braking duties were handled by ventilated discs at the front and solid discs at the rear. The ABS anti-lock braking system helped to maintain control during hard braking. The chassis was designed to provide a stable and predictable driving experience, even when fully loaded.
Market Reception & Comparison
The Audi A6 Avant 2.8 V6 quattro was generally well-received by automotive critics. It was praised for its spacious interior, comfortable ride, and all-weather capability. The V6 engine was considered smooth and refined, and the quattro system was lauded for its effectiveness. Fuel economy was considered average for a vehicle of its size and performance. Compared to other wagons in its class, such as the BMW 5 Series Touring and the Mercedes-Benz E-Class Estate, the A6 Avant offered a compelling combination of features and value. The 2.8 V6 quattro was often seen as a more practical and versatile alternative to the sportier, but less spacious, coupe models.
Legacy
The ACK engine, while generally reliable, is known to be susceptible to oil leaks as it ages. Proper maintenance, including regular oil changes and inspection of seals, is crucial to prevent issues. The quattro all-wheel-drive system remains highly regarded for its durability and performance. Today, the A6 Avant 2.8 V6 quattro is a sought-after classic among Audi enthusiasts. Well-maintained examples command a premium in the used car market. Its blend of practicality, performance, and luxury continues to appeal to buyers looking for a unique and capable station wagon.
