Audi A6 2004 fuel consumption
Year-to-year deviations of actual owner-reported average fuel consumption from advertised values
| Year | Gasoline cars | Diesel cars | ||
|---|---|---|---|---|
| All carmakers | Audi A6 | All carmakers | Audi A6 | |
| 2004 | +7% | +9% | +9% | +18% |
| Show all years | ||||
| 2005 | +8% | +12% | +10% | +13% |
| 2006 | +9% | +14% | +11% | +13% |
| 2007 | +11% | +14% | +12% | +14% |
| 2008 | +12% | +14% | +13% | +14% |
See below for the actual consumption of generations and versions of Audi A6.
Audi A6 2004 sedan fuel economy
| Average advertised fuel consumption for petrol engines | 23.6 MPG 10.0 l/100km |
| Average real-world fuel consumption for petrol engines | 21.6 MPG 10.9 l/100km |
| Average real gasoline consumption difference * | +12% |
| Average advertised fuel consumption for diesel engines | 31.3 MPG 7.5 l/100km |
| Average real-world fuel consumption for diesel engines | 27.8 MPG 8.5 l/100km |
| Average real diesel consumption difference * | +13% |
According to advertised fuel consumption, a Audi A6 2004 with automatic transmission consumes on average 0.3 liters per 100 km or 4% more fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation Audi A6 with automatic transmission consumes around 0.4 litres per 100 km or 5% more fuel than a version with the same engine but a manual gearbox.
Compared to similar cars of other manufacturers, the Audi A6 advertised fuel economy is slightly worse than average, but according to available user reports on actual consumption, real fuel economy is noticeably below average - at least two thirds of similar cars have lower fuel consumption.
The best real fuel economy in its class according to user reviews of all the modifications has modification with 2.4 petrol engine and manual transmission (Audi A6 2005 2.4 quattro 177 HP 4x4). However, of all modifications the best advertised fuel economy in its class has Audi A6 with 2.8 petrol engine and automatic transmission (Audi A6 2006 2.8 FSI 210 HP).
The table below shows the real and claimed fuel consumption and the differences for specific versions.
| Modification | Claimed consumption | Real consumption |
|---|---|---|
| 2.0 liter petrol engine | ||
| Audi A6 2005 2.0 T FSI 170 HP manual | 29.8 MPG 7.9 l/100km |
25.3 MPG 9.3 l/100km+18% |
| Audi A6 2005 2.0 T FSI 170 HP automatic | 28.7 MPG 8.2 l/100km |
24.8 MPG 9.5 l/100km+16% |
| 2.0 liter diesel engine | ||
| Audi A6 2004 2.0 TDI 140 HP manual | 39.2 MPG 6.0 l/100km |
31.8 MPG 7.4 l/100km+23% |
| Audi A6 2006 2.0 TDI 140 HP automatic | 35.1 MPG 6.7 l/100km |
30.2 MPG 7.8 l/100km+16% |
| 2.4 liter petrol engine | ||
| Audi A6 2004 2.4 177 HP manual | 24.2 MPG 9.7 l/100km |
23.5 MPG 10.0 l/100km+3% |
| Audi A6 2004 2.4 177 HP automatic | 24.5 MPG 9.6 l/100km |
23.3 MPG 10.1 l/100km+5% |
| Audi A6 2005 2.4 quattro 177 HP AWD manual | 21.4 MPG 11.0 l/100km |
21.4 MPG 11.0 l/100km0% |
| 2.7 liter diesel engine | ||
| Audi A6 2005 2.7 TDI 180 HP manual | 34.6 MPG 6.8 l/100km |
30.5 MPG 7.7 l/100km+13% |
| Audi A6 2005 2.7 TDI quattro 180 HP AWD automatic | 29.0 MPG 8.1 l/100km |
27.0 MPG 8.7 l/100km+7% |
| Audi A6 2006 2.7 TDI 180 HP automatic | 32.2 MPG 7.3 l/100km |
27.4 MPG 8.6 l/100km+18% |
| 2.8 liter petrol engine | ||
| Audi A6 2006 2.8 FSI 210 HP manual | 27.0 MPG 8.7 l/100km |
21.2 MPG 11.1 l/100km+28% |
| Audi A6 2006 2.8 FSI 210 HP automatic | 26.7 MPG 8.8 l/100km |
23.1 MPG 10.2 l/100km+16% |
| Audi A6 2007 2.8 FSI quattro 210 HP AWD automatic | 24.2 MPG 9.7 l/100km |
20.8 MPG 11.3 l/100km+16% |
| 3.0 liter petrol engine | ||
| Audi A6 2004 3.0 i V6 218 HP automatic | 22.2 MPG 10.6 l/100km |
|
| Audi A6 2004 3.0 i V6 quattro 218 HP AWD automatic | 19.3 MPG 12.2 l/100km |
|
| 3.0 liter diesel engine | ||
| Audi A6 2004 3.0 TDI quattro 225 HP AWD automatic | 28.0 MPG 8.4 l/100km |
25.0 MPG 9.4 l/100km+12% |
| Audi A6 2005 3.0 TDI quattro 225 HP AWD manual | 29.8 MPG 7.9 l/100km |
27.7 MPG 8.5 l/100km+8% |
| Audi A6 2006 3.0 TDI quattro 233 HP AWD manual | 29.4 MPG 8.0 l/100km |
27.0 MPG 8.7 l/100km+9% |
| Audi A6 2006 3.0 TDI quattro 233 HP AWD automatic | 27.7 MPG 8.5 l/100km |
25.3 MPG 9.3 l/100km+9% |
| 3.2 liter petrol engine | ||
| Audi A6 2004 3.2 FSI 255 HP manual | 24.2 MPG 9.7 l/100km |
21.0 MPG 11.2 l/100km+15% |
| Audi A6 2004 3.2 FSI quattro 255 HP AWD manual | 21.4 MPG 11.0 l/100km |
21.0 MPG 11.2 l/100km+2% |
| Audi A6 2004 3.2 FSI quattro 255 HP AWD automatic | 21.4 MPG 11.0 l/100km |
19.6 MPG 12.0 l/100km+9% |
| Audi A6 2005 3.2 FSI 255 HP automatic | 24.5 MPG 9.6 l/100km |
19.8 MPG 11.9 l/100km+24% |
| 4.2 liter petrol engine | ||
| Audi A6 2004 4.2 quattro 335 HP AWD automatic | 19.6 MPG 12.0 l/100km |
16.8 MPG 14.0 l/100km+17% |
* - Difference between advertised and user reported fuel economy has been calculated taking into account only those car versions for which information is available both on the fuel consumption specified by the manufacturer and reported by users.