Audi A8 1999 2.5 TDI 150 Hp
Audi A8 1999 2.5 diesel description
Sedan Audi A8 1999 2.5 TDI 150 Hp 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 A8 2.5 engine oil type is 5W-30 and oil capacity is 6 litres.
Audi A8 1999 2.5 TDI 150 Hp has front wheel drive (FWD) and manual gearbox with 6 gears.
Audi A8 1999 2.5 TDI 150 Hp accelerates to speed 100 kilometres per hour in 9.9 seconds. The maximum speed of this car is 220 km/h.
Audi A8 1999 2.5 TDI 150 Hp fuel consumption is 7.2 litres per 100km in combined city/highway mode (13.9 km/l) - this is the most fuel efficient Audi A8 1999 - 2002 version, fuel consumption in city - 10.2 l/100km, highway fuel economy - 5.5 l/100km. Fuel tank capacity is 90 litres or 23.78 gallons, which gives a mileage up to 1240 kilometers without refueling in urban cycle and even up to 1620 kilometers on highway.
- Audi A8 1999 2.5 TDI 150 Hp Automatic AT is more sluggish, reaching 100 km/h 1 seconds later (in 10.9 seconds), but manufacturer's fuel consumption is higher by 1 litres per 100 km or 14 % - 8.2 litres per 100 km
- Audi A8 1999 2.5 TDI Quattro 150 Hp Automatic AT 4x4 is more sluggish, reaching 100 km/h 1.2 seconds later (in 11.1 seconds), but manufacturer's fuel consumption is higher by 1.7 litres per 100 km or 24 % - 8.9 litres per 100 km
Audi A8 1999 2.5 TDI 150 Hp technical data
| Model: | Audi A8 2.5 TDI 150 Hp | ||
|---|---|---|---|
| Body style: | Sedan | ||
| Production period: | 1999. January ... 2001. January | ||
| Engine: | 2496 cm3 Diesel, 6 cylinders | CO2 emissions: | 197 g/km |
| Power: | 150 HP ON 4000 RPM | Torque: | 310 NM ON 1500 RPM |
| Gearbox: | Manual gearbox (6 gears) | Drive type: | Front wheel drive (FWD) |
| Top speed: | 220 km/h | Acceleration 0-100 km/h: | 9.9 seconds |
| Fuel consumption (l/100km): | 7.2 (combined) 10.2 (urban) 5.5 (highway) | ||
| Fuel tank capacity: | 90 litres (23.8 gallons) | ||
| Car dimensions: | 5.03m (length) 1.88m (width) 1.44m (height) | ||
| Turning diameter: | 12.3 meters | ||
| Seats: | 5 seats | ||
| Trunk capacity: | 525 litres | ||
| Gross weight: | 2195 kg | ||
Audi A8 1999 2.5 TDI 150 Hp 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 A8 1999 2.5 TDI 150 Hp oil type | 5W-30 |
| Oil capacity | 6 litres (6.3 quarts) |
| Coolant capacity | 8 litres (8.5 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 A4 |
Most often compared to
All Audi A8 sedan [1999 - 2002] modifications
| Modification | Engine | Power | Consumption | Gearbox | Drive type |
|---|---|---|---|---|---|
|
Audi A8 1999 2.5 TDI 150 Hp
Jan 1999 — Jan 2001 Most fuel efficient diesel version |
2.5 Diesel | 150 HP | 7.2 l/100km | Manual (6) | Front wheel |
| Audi A8 1999 2.5 TDI 150 Hp Automatic Jan 1999 — Jan 2001 | 2.5 Diesel | 150 HP | 8.2 l/100km | Automatic (5) | Front wheel |
| Audi A8 1999 2.5 TDI Quattro 150 Hp Automatic 4x4 Jan 1999 — Jan 2001 | 2.5 Diesel | 150 HP | 8.9 l/100km | Automatic (5) | All wheel |
|
Audi A8 2001 2.5 TDI 180 Hp
Jan 2001 — Nov 2002 Most fuel efficient diesel version |
2.5 Diesel | 180 HP | 7.2 l/100km | Manual (6) | Front wheel |
|
Audi A8 2001 2.5 TDI 180 Hp Automatic
Jan 2001 — Nov 2002 Most fuel efficient diesel version by real consumption |
2.5 Diesel | 180 HP | 8.1 l/100km | Automatic (5) | Front wheel |
|
Audi A8 2001 2.5 TDI Quattro 180 Hp Automatic 4x4
Jan 2001 — Nov 2002 Most fuel efficient diesel version by real consumption |
2.5 Diesel | 180 HP | 8.9 l/100km | Automatic (5) | All wheel |
|
Audi A8 1999 2.8 5V
Most fuel efficient petrol version |
2.8 Petrol | 193 HP | 9.9 l/100km | Manual (5) | Front wheel |
| Audi A8 1999 2.8 5V Automatic | 2.8 Petrol | 193 HP | 10.7 l/100km | Automatic (5) | Front wheel |
|
Audi A8 1999 2.8 5V Quattro 4x4
Most fuel efficient petrol version by real consumption |
2.8 Petrol | 193 HP | 11.1 l/100km | Manual (5) | All wheel |
| Audi A8 1999 2.8 5V Quattro Automatic 4x4 | 2.8 Petrol | 193 HP | 11.7 l/100km | Automatic (5) | All wheel |
|
Audi A8 2000 3.3 TDI Quattro 4x4
Jul 2000 — Nov 2002 Most powerfull diesel version (225 HP) |
3.3 Diesel | 225 HP | 9.7 l/100km | Automatic (5) | All wheel |
| Audi A8 1999 3.7 | 3.7 Petrol | 260 HP | 11.5 l/100km | Automatic (5) | Front wheel |
| Audi A8 1999 3.7 Quattro 4x4 | 3.7 Petrol | 260 HP | 12.3 l/100km | Automatic (5) | All wheel |
| Audi A8 1999 4.2 Quattro 4x4 | 4.2 Petrol | 310 HP | 12.9 l/100km | Automatic (5) | All wheel |
| Audi A8 2000 4.2 Quattro Long 4x4 Jan 2000 — Nov 2002 | 4.2 Petrol | 310 HP | 13.0 l/100km | Automatic (5) | All wheel |
|
Audi A8 2001 6.0 Quattro Long 4x4
Aug 2001 — Nov 2002 Most dynamic version - 100 km/h in 5.8 seconds |
6.0 Petrol | 420 HP | 14.6 l/100km | Automatic (5) | All wheel |
|
Audi A8 2001 6.0 Quattro 4x4
Dec 2001 — Nov 2002 Most dynamic version - 100 km/h in 5.8 seconds |
6.0 Petrol | 420 HP | 14.6 l/100km | Automatic (5) | All wheel |