The Audi A4 (B5) facelift, produced from 1999 to 2000, represented a significant mid-cycle refresh of Audi’s popular compact executive car. The 2.8 V6 30V quattro variant occupied a premium position within the B5 range, offering a blend of performance and all-weather capability. This model, identified by engine codes AMX, APR, and AQD, was a key offering in the North American and European markets, appealing to buyers seeking a more refined and powerful alternative to the base 1.8T models. It served as a bridge between the more accessible four-cylinder options and the flagship S4.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B5, Typ 8D, facelift 1999) |
| Type (Engine) | 2.8 V6 30V (193 Hp) quattro |
| Start of production | 1999 |
| End of production | 2000 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.8 l/100 km (15.9 US mpg, 19.1 UK mpg, 6.8 km/l) |
| Fuel consumption (extra urban) | 7.9 l/100 km (29.8 US mpg, 35.8 UK mpg, 12.7 km/l) |
| Fuel consumption (combined) | 10.4 l/100 km (22.6 US mpg, 27.2 UK mpg, 9.6 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.3 sec |
| Acceleration 0 – 62 mph | 7.3 sec |
| Acceleration 0 – 60 mph | 6.9 sec |
| Maximum speed | 238 km/h (147.89 mph) |
| Weight-to-power ratio | 7.5 kg/Hp, 134 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 194.4 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 | AMX, APR, AQD |
| 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 | 5.7 l (6.02 US qt, 5.02 UK qt) |
| Coolant | 8 l (8.45 US qt, 7.04 UK qt) |
| Kerb Weight | 1440 kg (3174.66 lbs.) |
| Max. weight | 1920 kg (4232.88 lbs.) |
| Max load | 480 kg (1058.22 lbs.) |
| Trunk (boot) space – minimum | 440 l (15.54 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal, 13.2 UK gal) |
| Length | 4479 mm (176.34 in.) |
| Width | 1733 mm (68.23 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2607 mm (102.64 in.) |
| Front track | 1498 mm (58.98 in.) |
| Rear (Back) track | 1477 mm (58.15 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 11.1 m (36.42 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Wishbone |
| Rear suspension | Double wishbone |
| 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 | 15 |
Powertrain & Engine Architecture
The heart of the 2.8 V6 quattro was the AHX/APR/AQD engine, a 2.8-liter naturally aspirated V6. This engine featured a 90-degree V-angle, contributing to its smooth operation. It utilized a cast iron block with an aluminum cylinder head, a common configuration for Audi engines of the era. The 30-valve configuration (five valves per cylinder – three intake, two exhaust) was a key feature, enhancing breathing and contributing to the engine’s power output. Fuel delivery was managed by a Bosch Motronic multi-port fuel injection system. The engine’s valvetrain employed double overhead camshafts (DOHC), further optimizing valve control. The engine was longitudinally mounted, a characteristic of Audi’s quattro all-wheel-drive system. The five-speed manual transmission was the standard offering, providing direct control over the engine’s power.
Driving Characteristics
The 2.8 V6 offered a noticeably more engaging driving experience than the 1.8T models. With 193 horsepower and 206 lb-ft of torque, acceleration to 60 mph took approximately 6.9 seconds. While not a sports car by modern standards, this performance was competitive for its time. The quattro all-wheel-drive system provided excellent traction, particularly in inclement weather, making it a popular choice in regions with harsh winters. The five-speed manual transmission allowed for precise gear selection, while the automatic option, though less engaging, offered convenience. The engine delivered a smooth and linear power delivery, with peak torque available at a relatively low 3200 rpm, making it responsive in everyday driving situations.
Equipment & Trim Levels
The 2.8 V6 quattro typically came well-equipped, reflecting its position as a premium trim level. Standard features included power windows, power locks, a sunroof, and air conditioning. Leather upholstery was often standard or a popular option. Audi’s Concert audio system was also a common feature. Optional extras included heated front seats, automatic climate control, and upgraded alloy wheels. The interior design was typically understated and functional, with a focus on ergonomics and build quality. The instrument cluster featured Audi’s signature white-on-black design.
Chassis & Braking
The B5 A4 featured a fully independent suspension system, with wishbone suspension at the front and a double wishbone setup at the rear. This configuration provided a comfortable ride while maintaining good handling characteristics. The quattro all-wheel-drive system distributed power between the front and rear axles as needed, enhancing stability and traction. Brakes were ventilated discs at the front and solid discs at the rear, providing adequate stopping power. Anti-lock braking system (ABS) was standard. Steering was rack-and-pinion with hydraulic power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The 2.8 V6 quattro was generally well-received by automotive critics. It was praised for its smooth engine, all-weather capability, and refined interior. Compared to the 1.8T models, the V6 offered a significant performance upgrade, but at a higher price point. The 1.8T was often seen as the more practical choice for everyday commuting, while the 2.8 V6 appealed to drivers who prioritized performance and driving enjoyment. Fuel economy was a common criticism, as the V6 consumed more fuel than the turbocharged four-cylinder engine. Reliability was generally good, although preventative maintenance was crucial to avoid issues with the timing belt and water pump.
Legacy
The Audi A4 B5 2.8 V6 quattro remains a popular choice among enthusiasts today. The engine is known for its durability and relatively straightforward maintenance. However, as with any older vehicle, regular maintenance is essential to keep it running reliably. The timing belt requires replacement at specified intervals, and the cooling system should be inspected regularly to prevent leaks. The quattro all-wheel-drive system continues to be a valuable asset, particularly in regions with challenging weather conditions. The B5 A4 2.8 V6 quattro represents a sweet spot in Audi’s lineup, offering a blend of performance, refinement, and all-weather capability that continues to appeal to drivers today.
