Audi A6 2004 2.0 TDI
Audi A6 2004 2.0 diesel description
Sedan Audi A6 2004 2.0 TDI has been produced from April, 2004 to October, 2008. It has four-cylinder diesel engine with displacement of 2.0 litres, which produces power of 140 horsepower on 4000 rpm and torque 320 Nm (Newton metres) on 1750 revolutions per minute.
This 4-cylinder 16-valve engine camshaft is driven by belt (What is an engine chain and belt? ). Engine has a fuel injection system with unit injectors and VGT turbine. The engine meets the Euro 4 emissions standard. Average engine life expectancy (mileage before serious repairs are needed) is from 240 000 to 410 000 kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs
The Audi BRE 2.0 TDI is a diesel engine produced from 2004 to 2008. It belongs to the older generation of Volkswagen Group 2.0 TDI units and is generally capable of ...
This Audi A6 2.0 engine oil type is 5W-30 and oil capacity is 4.3 litres.
Audi A6 2004 2.0 TDI has front wheel drive (FWD) and manual gearbox with 6 gears.
Audi A6 2004 2.0 TDI accelerates to speed 100 kilometres per hour in 10 seconds. The maximum speed of this car is 210 km/h.
The fuel consumption of this Audi A6 2004 2.0 TDI in combined mode (combining urban and highway driving) is 6 litres per 100km (16.7 km/l) - this is the most fuel efficient Audi A6 2004 - 2008 version, fuel consumption in city - 8 l/100km, highway fuel economy - 4.8 l/100km. Fuel tank capacity is 70 litres or 18.49 gallons, which gives a mileage up to 1160 kilometers without refueling in urban cycle and even up to 1440 kilometers on highway.
According to user reviews, this Audi real everyday fuel consumption is 7.4 litres per 100 km, which is 23% more than the manufacturer's stated. More - Real Audi A6 fuel consumption.
Audi A6 safety
During safety testing Audi A6 has obtained 5 stars from five, which means very high safety level.
Adults (driver and passenger) safety of Audi A6 is evaluated with five stars, children safety - with four stars, and for pedestrian protection Audi A6 got one star.

Audi A6 2004 2.0 TDI technical data
| Model: | Audi A6 2.0 TDI | ||
|---|---|---|---|
| Body style: | Sedan | ||
| Production period: | 2004. April ... 2008. October | ||
| Engine: | 1968 cm3 Diesel, 4 cylinders | CO2 emissions: | 161 g/km |
| Power: | 140 HP ON 4000 RPM | Torque: | 320 NM ON 1750 RPM |
| Gearbox: | Manual gearbox (6 gears) | Drive type: | Front wheel drive (FWD) |
| Maximum speed: | 210 km/h | Acceleration 0-100 km/h: | 10.0 seconds |
| Fuel consumption (l/100km): | 6.0 (combined) 8.0 (urban) 4.8 (highway) | ||
| Real fuel consumption: | 7.4 l/100km (31.8 MPG) by user reviews from various sources | ||
| Fuel tank capacity: | 70 litres (18.5 gallons) | ||
| Car dimensions: | 4.92m (length) 1.86m (width) 1.46m (height) | ||
| Turning diameter: | 12 meters | ||
| Gross weight: | 2120 kg | ||
Audi A6 2004 2.0 TDI engine BRE
Engine reliability and common problems:
The Audi BRE 2.0 TDI is a diesel engine produced from 2004 to 2008. It belongs to the older generation of Volkswagen Group 2.0 TDI units and is generally capable of decent mileage, but it has several weaknesses that can make ownership expensive if they are ignored.The best-known problem is wear of the oil pump drive hex shaft. Once it wears out, oil pressure can drop suddenly, creating a serious risk of engine damage. Because of this, the condition of the oil pump drive is one of the first things to check on this engine.
The electromagnetic unit injectors usually have a reasonable service life, but their replacement is costly. Many owners also report increased oil consumption, often around 0.5 liters per 1,000 km, so regular level checks are important.
Loss of power is commonly linked to sticking variable geometry in the turbocharger or a contaminated EGR system. Both issues are typical for diesels used in mixed or city driving, where soot buildup becomes more noticeable over time. Unstable engine operation can also be caused by a clogged diesel particulate filter.
Overall, the BRE can be a usable and fairly durable diesel, but it requires close attention to oil pressure, injector condition, turbocharger geometry, EGR cleanliness, and the particulate filter. Timely maintenance is essential, as some of its typical faults can lead to very expensive repairs if left unresolved.
Overall, this engine can last around 240,000 to 410,000 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 | 1968 cm3 |
|---|---|
| Number of cylinders | 4 |
| Bore (cylinder diameter) | 81 mm |
| Stroke length (piston move) | 95.5 mm |
| Compression ratio | 18 : 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. More service info |
| Fuel system | Unit injector |
| Audi A6 2004 2.0 TDI oil type | 5W-30 |
| Oil capacity | 4.3 litres (4.5 quarts) More service info |
| Power | 140 HP ON 4000 RPM |
| Torque | 320 NM ON 1750 RPM |
| Start of production (year) | 2004 |
| Duration of production | 4 years |
Most often compared to
All Audi A6 sedan [2004 - 2008] modifications
| Modification | Engine | Power | Consumption | Gearbox | Drive type |
|---|---|---|---|---|---|
|
Audi A6 2005 2.0 T FSI
Aug 2005 — Oct 2008 Most fuel efficient petrol version |
2.0 Petrol | 170 HP | 7.9 l/100km | Manual (6) | Front wheel |
| Audi A6 2005 2.0 T FSI Aug 2005 — Oct 2008 | 2.0 Petrol | 170 HP | 8.2 l/100km | Automatic | Front wheel |
|
Audi A6 2004 2.0 TDI
Apr 2004 — Oct 2008 Most fuel efficient diesel version |
2.0 Diesel | 140 HP | 6.0 l/100km | Manual (6) | Front wheel |
| Audi A6 2006 2.0 TDI Mar 2006 — Oct 2008 | 2.0 Diesel | 140 HP | 6.7 l/100km | Automatic | Front wheel |
| Audi A6 2004 2.4 Apr 2004 — Oct 2008 | 2.4 Petrol | 177 HP | 9.7 l/100km | Manual (6) | Front wheel |
| Audi A6 2004 2.4 Aug 2004 — Oct 2008 | 2.4 Petrol | 177 HP | 9.6 l/100km | Automatic | Front wheel |
| Audi A6 2005 2.4 quattro 4x4 Mar 2005 — Oct 2008 | 2.4 Petrol | 177 HP | 11.0 l/100km | Manual (6) | All wheel |
| Audi A6 2005 2.7 TDI Jan 2005 — Oct 2008 | 2.7 Diesel | 180 HP | 6.8 l/100km | Manual (6) | Front wheel |
| Audi A6 2006 2.7 TDI Mar 2006 — Oct 2008 | 2.7 Diesel | 180 HP | 7.3 l/100km | Automatic (6) | Front wheel |
| Audi A6 2005 2.7 TDI quattro 4x4 Aug 2005 — Oct 2008 | 2.7 Diesel | 180 HP | 8.1 l/100km | Automatic (6) | All wheel |
| Audi A6 2006 2.8 FSI Nov 2006 — Oct 2008 | 2.8 Petrol | 210 HP | 8.7 l/100km | Manual (6) | Front wheel |
| Audi A6 2006 2.8 FSI Nov 2006 — Oct 2008 | 2.8 Petrol | 210 HP | 8.8 l/100km | Automatic | Front wheel |
| Audi A6 2007 2.8 FSI quattro 4x4 Jun 2007 — Oct 2008 | 2.8 Petrol | 210 HP | 9.7 l/100km | Automatic (6) | All wheel |
|
Audi A6 2004 3.0 i V6
Jan 2004 — Jan 2008 Most fuel efficient petrol version by real consumption |
3.0 Petrol | 218 HP | 10.6 l/100km | Automatic | Front wheel |
| Audi A6 2004 3.0 i V6 quattro 4x4 Jan 2004 — Jan 2008 | 3.0 Petrol | 218 HP | 12.2 l/100km | Automatic (6) | All wheel |
| Audi A6 2005 3.0 TDI quattro 4x4 Mar 2005 — Jun 2006 | 3.0 Diesel | 225 HP | 7.9 l/100km | Manual (6) | All wheel |
| Audi A6 2004 3.0 TDI quattro 4x4 Apr 2004 — Jun 2006 | 3.0 Diesel | 225 HP | 8.4 l/100km | Automatic (6) | All wheel |
|
Audi A6 2006 3.0 TDI quattro 4x4
Jun 2006 — Oct 2008 Most powerfull diesel version (233 HP) |
3.0 Diesel | 233 HP | 8.0 l/100km | Manual (6) | All wheel |
|
Audi A6 2006 3.0 TDI quattro 4x4
Jun 2006 — Oct 2008 Most powerfull diesel version (233 HP) |
3.0 Diesel | 233 HP | 8.5 l/100km | Automatic (6) | All wheel |
| Audi A6 2004 3.2 FSI Apr 2004 — Jun 2007 | 3.2 Petrol | 255 HP | 9.7 l/100km | Manual (6) | Front wheel |
| Audi A6 2005 3.2 FSI Aug 2005 — Oct 2008 | 3.2 Petrol | 255 HP | 9.6 l/100km | Automatic | Front wheel |
| Audi A6 2004 3.2 FSI quattro 4x4 Apr 2004 — Oct 2008 | 3.2 Petrol | 255 HP | 11.0 l/100km | Manual (6) | All wheel |
| Audi A6 2004 3.2 FSI quattro 4x4 Apr 2004 — Oct 2008 | 3.2 Petrol | 255 HP | 11.0 l/100km | Automatic (6) | All wheel |
|
Audi A6 2004 4.2 quattro 4x4
Apr 2004 — Oct 2008 Most dynamic version - 100 km/h in 6.1 seconds |
4.2 Petrol | 335 HP | 12.0 l/100km | Automatic (6) | All wheel |
