Audi A4 1999 2.5 TDI Quattro
Audi A4 1999 2.5 diesel description
Sedan Audi A4 1999 2.5 TDI Quattro has been produced from January, 1999 to January, 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. Engine lifespan (mileage before major repairs or overhaul) can last from 230 up to 390 thousand 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 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, which operates at speeds up to 40 km/h (25 mph) and applies the brakes to spinning wheels, with the effect of locking the front and rear differentials.
Audi A4 1999 2.5 TDI Quattro accelerates to speed 100 kilometres per hour in 9.4 seconds. The maximum speed of this car is 220 km/h.
Audi A4 1999 2.5 TDI Quattro fuel consumption is 7.8 litres per 100km in combined city/highway mode (12.8 km/l), fuel consumption in city - 11.1 l/100km, highway fuel economy - 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 2.5 TDI MT is more dynamic - it reaches 100 km/h 0.4 seconds faster (in 9 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 2.5 TDI AT is more sluggish, reaching 100 km/h 0.8 seconds later (in 10.2 seconds), but manufacturer's fuel consumption is similar - 7.7 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 2.5 TDI Quattro AT 4x4 is more sluggish, reaching 100 km/h 1.3 seconds later (in 10.7 seconds), moreover, it is less economic with manufacturer's fuel consumption is higher by 0.7 litres per 100 km or 9 % - 8.5 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 2.5 TDI Quattro technical data
| Model: | Audi A4 2.5 TDI Quattro | ||
|---|---|---|---|
| Body style: | Sedan | ||
| Production period: | 1999. January ... 2001. January | ||
| 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) |
| Top speed: | 220 km/h | Acceleration 0-100 km/h: | 9.4 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: | 440 litres | ||
| Gross weight: | 2045 kg | ||
Audi A4 1999 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 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 |
All Audi A4 sedan [1999 - 2001] modifications
| Modification | Engine | Power | Consumption | Gearbox | Drive type |
|---|---|---|---|---|---|
|
Audi A4 1999 1.6
Most fuel efficient petrol version |
1.6 Petrol | 101 HP | 7.9 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 1.6 Jul 1999 — Jan 2001 | 1.6 Petrol | 101 HP | 8.6 l/100km | Automatic (4) | Front wheel |
|
Audi A4 1999 1.8 5V
Most fuel efficient petrol version by real consumption |
1.8 Petrol | 125 HP | 8.4 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 1.8 5V | 1.8 Petrol | 125 HP | 8.8 l/100km | Automatic (4) | Front wheel |
| Audi A4 1999 1.8 5V Quattro 4x4 | 1.8 Petrol | 125 HP | 9.2 l/100km | Manual (5) | All wheel |
|
Audi A4 1999 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 1.8 5V Turbo | 1.8 Petrol | 150 HP | 9.1 l/100km | Automatic (5) | Front wheel |
| Audi A4 1999 1.8 5V Turbo Quattro 4x4 | 1.8 Petrol | 150 HP | 8.9 l/100km | Manual (5) | All wheel |
|
Audi A4 1999 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 1.9 TDI | 1.9 Diesel | 90 HP | 6.4 l/100km | Automatic (4) | Front wheel |
|
Audi A4 1999 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 1.9 TDI Jan 1999 — Jan 2000 | 1.9 Diesel | 110 HP | 6.4 l/100km | Automatic (4) | Front wheel |
| Audi A4 1999 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 1.9 TDI
Jan 2000 — Jan 2001 Most fuel efficient diesel version |
1.9 Diesel | 115 HP | 5.3 l/100km | Manual (5) | Front wheel |
| Audi A4 2000 1.9 TDI Jan 2000 — Jan 2001 | 1.9 Diesel | 115 HP | 6.8 l/100km | Automatic (5) | Front wheel |
| Audi A4 2000 1.9 TDI Quattro 4x4 Jan 2000 — Jan 2001 | 1.9 Diesel | 115 HP | 6.0 l/100km | Manual (5) | All wheel |
| Audi A4 1999 2.4 5V | 2.4 Petrol | 165 HP | 9.4 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 2.4 5V | 2.4 Petrol | 165 HP | 9.9 l/100km | Automatic (5) | Front wheel |
| Audi A4 1999 2.4 5V Quattro 4x4 | 2.4 Petrol | 165 HP | 10.3 l/100km | Manual (5) | All wheel |
| Audi A4 1999 2.5 TDI | 2.5 Diesel | 150 HP | 6.8 l/100km | Manual (6) | Front wheel |
| Audi A4 1999 2.5 TDI | 2.5 Diesel | 150 HP | 7.7 l/100km | Automatic (5) | Front wheel |
| Audi A4 1999 2.5 TDI Quattro 4x4 | 2.5 Diesel | 150 HP | 7.8 l/100km | Manual (6) | All wheel |
| Audi A4 1999 2.5 TDI Quattro 4x4 | 2.5 Diesel | 150 HP | 8.5 l/100km | Automatic (5) | All wheel |
| Audi A4 1999 2.8 5V | 2.8 Petrol | 193 HP | 9.4 l/100km | Manual (5) | Front wheel |
| Audi A4 1999 2.8 5V | 2.8 Petrol | 193 HP | 10.2 l/100km | Automatic (5) | Front wheel |
|
Audi A4 1999 2.8 5V Quattro 4x4
Most dynamic version - 100 km/h in 7.2 seconds |
2.8 Petrol | 193 HP | 10.4 l/100km | Manual (5) | All wheel |
| Audi A4 1999 2.8 5V Quattro 4x4 | 2.8 Petrol | 193 HP | 10.9 l/100km | Automatic (5) | All wheel |