Audi A6 2005 fuel consumption

Audi A6 from 2005 to 2008 real fuel consumption according to user reports is approximately 22% higher compared to advertised fuel consumption. For petrol engines real consumption is in average 24% higher, but for diesel engines is approximately 20% higher. Starting from 2005 Audi A6 average difference between actual owner-reported fuel consumption and stated consumption was slightly above industry average, at 2006 it was significantly higher than average, at 2007 difference between owner-reported and advertised fuel economy became slightly above industry average. For more details, see the table below.

Year-to-year deviations of actual owner-reported average fuel consumption from advertised values

Year	Gasoline cars		Diesel cars
Year	All carmakers	Audi A6	All carmakers	Audi A6
2005	+8%	+13%	+10%	+9%
Show all years
2006	+9%	+15%	+11%	+10%
2007	+11%	+15%	+12%	+10%
2008	+12%	+15%	+13%	+10%

See below for the actual consumption of generations and versions of Audi A6.

2005 - 2008

Audi A6 2005 Avant wagon fuel economy

Average advertised fuel consumption for petrol engines	24.1 MPG 9.7 l/100km
Average real-world fuel consumption for petrol engines	21.5 MPG 11.0 l/100km
Average real gasoline consumption difference *	+13%
Average advertised fuel consumption for diesel engines	30.5 MPG 7.7 l/100km
Average real-world fuel consumption for diesel engines	27.8 MPG 8.5 l/100km
Average real diesel consumption difference *	+10%

Audi A6 2005 specs Audi A6 2005 owner reviews Audi A6 service info and schedule

According to advertised fuel consumption, a Audi A6 2005 with automatic transmission consumes on average 0.1 liters per 100 km or 2% 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 Avant 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 Avant 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 Avant 2.0 T FSI 170 HP manual	29.0 MPG 8.1 l/100km	25.3 MPG 9.3 l/100km+15%
Audi A6 2005 Avant 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 2005 Avant 2.0 TDI 140 HP manual	36.8 MPG 6.4 l/100km	31.4 MPG 7.5 l/100km+17%
Audi A6 2006 Avant 2.0 TDI 140 HP automatic	35.1 MPG 6.7 l/100km	30.5 MPG 7.7 l/100km+15%
2.4 liter petrol engine
Audi A6 2005 Avant 2.4 177 HP manual	23.8 MPG 9.9 l/100km	23.5 MPG 10.0 l/100km+1%
Audi A6 2005 Avant 2.4 177 HP automatic	24.5 MPG 9.6 l/100km	22.8 MPG 10.3 l/100km+7%
Audi A6 2005 Avant 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 Avant 2.7 TDI 180 HP manual	32.7 MPG 7.2 l/100km	30.5 MPG 7.7 l/100km+7%
Audi A6 2005 Avant 2.7 TDI quattro 180 HP AWD automatic	27.7 MPG 8.5 l/100km	27.0 MPG 8.7 l/100km+2%
Audi A6 2006 Avant 2.7 TDI 180 HP automatic	31.4 MPG 7.5 l/100km	27.4 MPG 8.6 l/100km+15%
2.8 liter petrol engine
Audi A6 2006 Avant 2.8 FSI 210 HP manual	26.7 MPG 8.8 l/100km	21.2 MPG 11.1 l/100km+26%
Audi A6 2006 Avant 2.8 FSI 210 HP automatic	26.7 MPG 8.8 l/100km	22.0 MPG 10.7 l/100km+22%
3.0 liter diesel engine
Audi A6 2005 Avant 3.0 TDI quattro 225 HP AWD manual	29.4 MPG 8.0 l/100km	27.7 MPG 8.5 l/100km+6%
Audi A6 2005 Avant 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 2006 Avant 3.0 TDI quattro 233 HP AWD manual	29.0 MPG 8.1 l/100km	27.0 MPG 8.7 l/100km+7%
Audi A6 2006 Avant 3.0 TDI quattro 233 HP AWD automatic	27.4 MPG 8.6 l/100km	25.3 MPG 9.3 l/100km+8%
3.1 liter petrol engine
Audi A6 2005 3.1 Avant 3.2 FSI 255 HP manual	23.8 MPG 9.9 l/100km	20.6 MPG 11.4 l/100km+15%
Audi A6 2005 3.1 Avant 3.2 FSI 255 HP automatic	24.5 MPG 9.6 l/100km	19.8 MPG 11.9 l/100km+24%
Audi A6 2005 3.1 Avant 3.2 FSI quattro 255 HP AWD manual	21.4 MPG 11.0 l/100km	20.6 MPG 11.4 l/100km+4%
Audi A6 2005 3.1 Avant 3.2 FSI quattro 255 HP AWD automatic	21.4 MPG 11.0 l/100km	19.8 MPG 11.9 l/100km+8%
4.2 liter petrol engine
Audi A6 2005 Avant 4.2 quattro 335 HP AWD automatic	21.4 MPG 11.0 l/100km	16.8 MPG 14.0 l/100km+27%

Do you own a Audi A6? Please share your fuel economy!

* - 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.

User-reported fuel consumption may not accurately represent all users' experiences due to variables such as driving conditions, driving style, technical condition of the vehicle, and other circumstances. Thus, it should not be relied upon as a representative indicator.