Audi A4 1999 Avant 2.5 TDI Quattro
Audi A4 1999 2.5 diesel description
Estate car / wagon Audi A4 1999 Avant 2.5 TDI Quattro has been produced from January, 1999 to July, 2001. It has six-cylinder diesel engine with displacement of 2.5 litres, which produces power of 150 horsepower on 4000 rpm and torque 310 Nm (Newton metres) on 1500 revolutions per minute.
This 6-cylinder 24-valve engine camshaft is driven by belt (What is an engine chain and belt? ). Engine has fuel injection system and VGT turbine. The engine meets the Euro 3 emissions standard. Average engine life expectancy (mileage before serious repairs are needed) is from 230 000 to 390 000 kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs
The 2.5 TDI engine is known for several recurring issues, many of which significantly affect reliability if not addressed promptly. One of the most ...
This Audi A4 2.5 engine oil type is 5W-30 and oil capacity is 6 litres.
Audi A4 1999 Avant 2.5 TDI Quattro has AWD (all wheel drive) (power is automatically distributed between the wheel axles) and manual gearbox with 6 gears. The vehicle features full-time Quattro IV all-wheel drive with Torsen center differential and electronic traction control that operates at speeds up to 40 km/h and applies brakes to spinning wheels, with the effect of locking the front and rear differential.
Audi A4 1999 Avant 2.5 TDI Quattro accelerates to speed 100 kilometres per hour in 9.6 seconds. The maximum speed of this car is 216 km/h.
The fuel consumption of this Audi A4 1999 Avant 2.5 TDI Quattro in combined mode (combining urban and highway driving) is 7.8 litres per 100km (12.8 km/l), city fuel economy - 11.1 l/100km, fuel consumption on highway - 5.9 l/100km. Fuel tank capacity is 62 litres or 16.38 gallons, which gives a mileage up to 780 kilometers without refueling in urban cycle and even up to 1040 kilometers on highway.
According to user reviews, the real everyday fuel consumption of this Audi is in line with, and sometimes even lower than, the manufacturer's stated combined consumption. More - Real Audi A4 fuel consumption.
- Audi A4 1999 Avant 2.5 TDI MT is more dynamic - it reaches 100 km/h 0.4 seconds faster (in 9.2 seconds), but manufacturer's fuel consumption is lower by 1 litres per 100 km or 13 % - 6.8 litres per 100 km, whereas users reported real fuel consumption is similar - 7.0 litres per 100 km
- Audi A4 1999 Avant 2.5 TDI AT is more sluggish, reaching 100 km/h 0.8 seconds later (in 10.4 seconds), but manufacturer's fuel consumption is similar - 7.9 litres per 100 km, whereas users reported real fuel consumption is higher by 1.3 litres per 100 km or 19 % - 8.3 litres per 100 km
- Audi A4 1999 Avant 2.5 TDI Quattro AT 4x4 is more sluggish, reaching 100 km/h 1.3 seconds later (in 10.9 seconds), moreover, it is less economic with manufacturer's fuel consumption is higher by 0.8 litres per 100 km or 10 % - 8.6 litres per 100 km, whereas users reported real fuel consumption is higher by 1.3 litres per 100 km or 19 % - 8.3 litres per 100 km
Audi A4 1999 Avant 2.5 TDI Quattro technical data
| Model: | Audi A4 Avant 2.5 TDI Quattro | ||
|---|---|---|---|
| Body style: | Estate car / wagon | ||
| Production period: | 1999. January ... 2001. July | ||
| Engine: | 2496 cm3 Diesel, 6 cylinders | CO2 emissions: | 211 g/km |
| Power: | 150 HP ON 4000 RPM | Torque: | 310 NM ON 1500 RPM |
| Gearbox: | Manual gearbox (6 gears) | Drive type: | All wheel drive (AWD, 4x4) |
| Maximum speed: | 216 km/h | Acceleration 0-100 km/h: | 9.6 seconds |
| Fuel consumption (l/100km): | 7.8 (combined) 11.1 (urban) 5.9 (highway) | ||
| Real fuel consumption: | 7.7 l/100km (30.5 MPG) by user reviews from various sources | ||
| Fuel tank capacity: | 62 litres (16.4 gallons) | ||
| Car dimensions: | 4.48m (length) 1.73m (width) 1.42m (height) | ||
| Turning diameter: | 11.1 meters | ||
| Trunk capacity: | 390 litres | ||
| Gross weight: | 2085 kg | ||
Audi A4 1999 Avant 2.5 TDI Quattro engine AKN
Engine reliability and common problems:
The 2.5 TDI engine is known for several recurring issues, many of which significantly affect reliability if not addressed promptly. One of the most common problems is rapid wear of camshaft lobes or rocker arms, leading to frequent complaints from owners. Additionally, the electronically controlled Bosch VP44 high-pressure fuel pump often fails, causing operational disruptions and requiring costly repairs.Oil leaks are another prevalent issue, commonly occurring at joint seals and from the valve cover gasket. Beyond 150,000 km, the variable geometry mechanism of the turbocharger can seize, impacting performance. The turbocharger itself, while generally lasting up to 250,000 km, can fail earlier, with symptoms such as power loss and oil smoke from the exhaust.
The engine also suffers from weak points, including the viscous coupling bearing and relief valves, which can cause additional maintenance challenges. Glow plugs are prone to seizing in the aluminum cylinder head, often requiring removal with part of the thread, followed by cylinder head thread restoration.
Overall, while the engine offers good performance, these vulnerabilities necessitate regular inspections, timely repairs, and careful maintenance to ensure longevity and reliability.
Overall, this engine can last around 230,000 to 390,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
| Engine displacement | 2496 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 78.3 mm |
| Stroke length (piston move) | 86.4 mm |
| Compression ratio | 19.5 : 1 |
| Camshaft drive | Timing belt Timing belt engines are generally quieter and less vibrating than chain engines, but belt usually needs to be replaced more often and the risk of breakage is higher. |
| Fuel system | Injection |
| Audi A4 1999 Avant 2.5 TDI Quattro oil type | 5W-30 |
| Oil capacity | 6 litres (6.3 quarts) |
| Power | 150 HP ON 4000 RPM |
| Torque | 310 NM ON 1500 RPM |
| Engine manufacturer | Volkswagen (VW) |
| Start of production (year) | 1999 |
| Duration of production | 4 years |
| Engine also used on | Volkswagen Passat Audi A8 |
Most often compared to
All Audi A4 estate car [1999 - 2001] modifications
| Modification | Engine | Power | Consumption | Gearbox | Drive type |
|---|---|---|---|---|---|
|
Audi A4 1999 Avant 1.6
Most fuel efficient petrol version |
1.6 Petrol | 101 HP | 7.9 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 1.6 Jul 1999 — Jan 2001 | 1.6 Petrol | 101 HP | 8.8 l/100km | Automatic (4) | Front wheel |
| Audi A4 1999 Avant 1.8 5V | 1.8 Petrol | 125 HP | 8.5 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 1.8 5V | 1.8 Petrol | 125 HP | 8.8 l/100km | Automatic (4) | Front wheel |
| Audi A4 1999 Avant 1.8 5V Quattro 4x4 Jan 1999 — Jan 2001 | 1.8 Petrol | 125 HP | 9.3 l/100km | Manual (5) | All wheel |
|
Audi A4 1999 Avant 1.8 5V Turbo
Most fuel efficient petrol version |
1.8 Petrol | 150 HP | 7.9 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 1.8 5V Turbo | 1.8 Petrol | 150 HP | 9.1 l/100km | Automatic (5) | Front wheel |
| Audi A4 1999 Avant 1.8 5V Turbo Quattro 4x4 | 1.8 Petrol | 150 HP | 9.1 l/100km | Manual (5) | All wheel |
|
Audi A4 1999 Avant 1.9 TDI
Most fuel efficient diesel version by real consumption |
1.9 Diesel | 90 HP | 5.4 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 1.9 TDI Jan 1999 — Jan 2001 | 1.9 Diesel | 90 HP | 6.4 l/100km | Automatic (4) | Front wheel |
|
Audi A4 1999 Avant 1.9 TDI
Jan 1999 — Jan 2000 Most fuel efficient diesel version |
1.9 Diesel | 110 HP | 5.3 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 1.9 TDI Jan 1999 — Jan 2000 | 1.9 Diesel | 110 HP | 6.4 l/100km | Automatic (4) | Front wheel |
| Audi A4 1999 Avant 1.9 TDI Quattro 4x4 Jan 1999 — Jan 2000 | 1.9 Diesel | 110 HP | 5.9 l/100km | Manual (5) | All wheel |
|
Audi A4 2000 Avant 1.9 TDI
Jan 2000 — Jul 2001 Most fuel efficient diesel version |
1.9 Diesel | 115 HP | 5.3 l/100km | Manual (5) | Front wheel |
| Audi A4 2000 Avant 1.9 TDI Jan 2000 — Jul 2001 | 1.9 Diesel | 115 HP | 6.4 l/100km | Automatic (5) | Front wheel |
| Audi A4 2000 Avant 1.9 TDI Quattro 4x4 Jan 2000 — Jul 2001 | 1.9 Diesel | 115 HP | 6.1 l/100km | Manual (5) | All wheel |
| Audi A4 1999 Avant 2.4 5V | 2.4 Petrol | 165 HP | 9.4 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 2.4 5V | 2.4 Petrol | 165 HP | 10.0 l/100km | Automatic (5) | Front wheel |
| Audi A4 1999 Avant 2.4 5V Quattro 4x4 Jan 1999 — Jan 2001 | 2.4 Petrol | 165 HP | 10.4 l/100km | Manual (5) | All wheel |
| Audi A4 1999 Avant 2.5 TDI | 2.5 Diesel | 150 HP | 6.8 l/100km | Manual (6) | Front wheel |
| Audi A4 1999 Avant 2.5 TDI | 2.5 Diesel | 150 HP | 7.9 l/100km | Automatic (5) | Front wheel |
| Audi A4 1999 Avant 2.5 TDI Quattro 4x4 | 2.5 Diesel | 150 HP | 7.8 l/100km | Manual (6) | All wheel |
| Audi A4 1999 Avant 2.5 TDI Quattro 4x4 | 2.5 Diesel | 150 HP | 8.6 l/100km | Automatic (5) | All wheel |
|
Audi A4 1999 Avant 2.8 5V
Jan 1999 — Jan 2001 Most dynamic version - 100 km/h in 7.4 seconds |
2.8 Petrol | 193 HP | 9.4 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 Avant 2.8 5V Jan 1999 — Jan 2001 | 2.8 Petrol | 193 HP | 10.2 l/100km | Automatic (5) | Front wheel |
|
Audi A4 1999 Avant 2.8 5V Quattro 4x4
Most dynamic version - 100 km/h in 7.4 seconds |
2.8 Petrol | 193 HP | 10.5 l/100km | Manual (5) | All wheel |
| Audi A4 1999 Avant 2.8 5V Quattro 4x4 | 2.8 Petrol | 193 HP | 10.9 l/100km | Automatic (5) | All wheel |