Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B5, Typ 8D, facelift 1999) |
| Type (Engine) | 1.8 20V (125 Hp) Automatic |
| Start of production | 1999 |
| End of production | 2000 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 12.3 l/100 km (19.1 US mpg, 23 UK mpg, 8.1 km/l) |
| Fuel consumption (extra urban) | 7 l/100 km (33.6 US mpg, 40.4 UK mpg, 14.3 km/l) |
| Fuel consumption (combined) | 8.9 l/100 km (26.4 US mpg, 31.7 UK mpg, 11.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 12.3 sec |
| Acceleration 0 – 62 mph | 12.3 sec |
| Acceleration 0 – 60 mph | 11.7 sec |
| Maximum speed | 198 km/h (123.03 mph) |
| Weight-to-power ratio | 10 kg/Hp, 99.6 Hp/tonne |
| Weight-to-torque ratio | 7.5 kg/Nm, 133.9 Nm/tonne |
| Power | 125 Hp @ 5800 rpm |
| Power per litre | 70.2 Hp/l |
| Torque | 168 Nm @ 3500 rpm (123.91 lb.-ft. @ 3500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | ADR, APT, ARG, AVV |
| Engine displacement | 1781 cm3 (108.68 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 81 mm (3.19 in.) |
| Piston Stroke | 86.4 mm (3.4 in.) |
| Compression ratio | 10.3:1 |
| Number of valves per cylinder | 5 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 3.5 l (3.7 US qt | 3.08 UK qt) |
| Coolant | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Kerb Weight | 1255 kg (2766.8 lbs.) |
| Max. weight | 1805 kg (3979.34 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 440 l (15.54 cu. ft.) |
| Fuel tank capacity | 62 l (16.38 US gal | 13.64 UK gal) |
| Length | 4479 mm (176.34 in.) |
| Width | 1733 mm (68.23 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2617 mm (103.03 in.) |
| Front track | 1498 mm (58.98 in.) |
| Rear (Back) track | 1479 mm (58.23 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 11.1 m (36.42 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Wishbone |
| Rear suspension | Suspension with traction connecting levers |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 195/65 R15 |
| Wheel rims size | 15 |
The Audi A4 (B5) 1.8 20V Automatic, produced from 1999 to 2000, represents a refined iteration of Audi’s popular compact executive car. This variant, part of the facelifted B5 generation (Typ 8D), aimed to provide a balance of performance and affordability within the A4 range. Positioned as a mid-range offering, it catered to buyers seeking a comfortable and refined driving experience without the higher price tag of the more powerful models like the 2.8 V6. The 1.8L engine paired with an automatic transmission was a common choice for those prioritizing ease of use and convenience, particularly in North American markets where automatics were highly preferred.
Powertrain & Engine Architecture
The heart of this A4 variant is the 1.8-liter, 20-valve inline-four cylinder engine. Engine codes commonly found in this model year include ADR, APT, ARG, and AVV, with minor variations in calibration and emissions control equipment. This engine utilizes a naturally aspirated configuration with multi-port fuel injection, delivering a relatively smooth and linear power delivery. The 20-valve cylinder head, featuring dual overhead camshafts (DOHC), contributes to improved breathing and higher-end power. The automatic transmission used was typically a four-speed unit, designed for comfortable cruising and ease of operation. While not known for its sportiness, this transmission was reliable and well-suited to the engine’s torque characteristics. The engine’s longitudinal mounting within the chassis, a hallmark of Audi’s engineering, contributes to balanced weight distribution.
Driving Characteristics
The 1.8L 20V Automatic A4 offered a comfortable and predictable driving experience. Acceleration from 0-60 mph took around 11.7 to 12.3 seconds, making it adequate for everyday driving but not particularly sporty. The automatic transmission, while smooth, did result in some power loss compared to the available five-speed manual. Gear ratios were optimized for fuel efficiency and relaxed cruising, rather than aggressive acceleration. The engine provided sufficient torque for merging onto highways and overtaking, but required downshifting for quicker responses. Compared to the higher-output 2.8 V6 models, the 1.8L Automatic felt noticeably less powerful, but it offered a more economical and accessible entry point into the A4 range.
Equipment & Trim Levels
The 1.8 20V Automatic A4 typically came standard with features such as power windows, power locks, air conditioning, and an AM/FM radio. Higher trim levels offered options like leather upholstery, sunroof, premium sound systems, and alloy wheels. Interior upholstery was generally cloth, with leather available as an upgrade. Dashboard configuration was consistent across the B5 range, featuring a straightforward layout with easy-to-read gauges. Optional extras included heated front seats, automatic climate control, and a trip computer.
Chassis & Braking
The A4 B5 featured a fully independent suspension system, with wishbone front suspension and a multi-link rear suspension. This setup provided a comfortable ride and good handling characteristics. The 1.8L models typically used smaller diameter brakes compared to the V6 variants, with disc brakes on all four wheels. Anti-lock Braking System (ABS) was standard equipment. Stabilizer bars were fitted front and rear to reduce body roll during cornering. The suspension tuning was geared towards comfort and stability, rather than outright sportiness.
Market Reception & Comparison
The 1.8L Automatic A4 was generally well-received by critics as a practical and well-rounded vehicle. It offered a good balance of comfort, fuel economy, and features at a competitive price point. Fuel economy was a strong point, with combined figures around 26.4 US mpg. Compared to the 2.8 V6 models, the 1.8L Automatic was more affordable to purchase and maintain. However, some reviewers noted the lack of performance compared to the V6 and the somewhat sluggish response of the automatic transmission. The 1.9 TDI diesel variant, popular in Europe, offered superior fuel economy and torque but lacked the refinement of the gasoline engine.
Legacy
The Audi A4 B5 1.8 20V Automatic has proven to be a relatively reliable vehicle, with many examples still on the road today. The 1.8L engine is known for its durability, although regular maintenance is crucial. Common issues include oil leaks, sensor failures, and wear and tear on the automatic transmission. In the used car market, these A4s represent an affordable entry point into the Audi brand. They are often sought after by enthusiasts looking for a classic European sedan with a comfortable ride and a reputation for reliability. Parts availability remains good, making maintenance and repairs relatively straightforward.
