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Subaru Legacy 2009 fuel consumption

Subaru Legacy from 2009 to 2012 real fuel consumption according to user reports is approximately 6% higher compared to advertised fuel consumption. For petrol engines real consumption is in average 4% higher, but for diesel engines is approximately 8% higher. Since 2009 the Subaru Legacy average difference between owner-reported real-world fuel consumption and declared fuel economy has been less than industry average.

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

YearGasoline carsDiesel cars
All carmakersSubaru LegacyAll carmakersSubaru Legacy
2009+14%-+14%+10%
Show all years
2010+16%-+16%+10%
2011+19%-+19%+10%
2012+21%-+23%+10%

See below for the actual consumption of generations and versions of Subaru Legacy.

2009 - 2012

Subaru Legacy 2009 wagon fuel economy

Average advertised fuel consumption for petrol engines26.4 MPG
8.9 l/100km
Average real-world fuel consumption for petrol engines28.3 MPG
8.3 l/100km
Average real gasoline consumption difference *insignificant
Average advertised fuel consumption for diesel engines38.6 MPG
6.1 l/100km
Average real-world fuel consumption for diesel engines35.6 MPG
6.6 l/100km
Average real diesel consumption difference *+8%

According to advertised fuel consumption, a Subaru Legacy 2009 with automatic transmission consumes on average 0.5 liters per 100 km or 6% less fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation Subaru Legacy with automatic transmission consumes around 1 litres per 100 km or 11% less fuel than a version with the same engine but a manual gearbox.

The best real fuel economy in its class according to user reviews of all the modifications has modification with 2.0 petrol engine and automatic transmission (Subaru Legacy 2009 Touring Wagon 2.0i Automatic 4x4 150 HP). However, of all modifications the best advertised fuel economy in its class has Subaru Legacy with 2.5 petrol engine and automatic transmission (Subaru Legacy 2009 Touring Wagon 2.5i Sport 167 HP 4x4).

ModificationClaimed consumptionReal consumption
2.0 liter petrol engine
Subaru Legacy 2009 Touring Wagon 2.0i 4x4 150 HP manual 27.4 MPG
8.6 l/100km
26.7 MPG
8.8 l/100km+2%
Subaru Legacy 2009 Touring Wagon 2.0i Automatic 4x4 150 HP automatic 29.0 MPG
8.1 l/100km
27.4 MPG
8.6 l/100km+6%
2.0 liter diesel engine
Subaru Legacy 2009 Touring Wagon 2.0D 150 HP 4x4 manual 38.6 MPG
6.1 l/100km
35.6 MPG
6.6 l/100km+8%
2.5 liter petrol engine
Subaru Legacy 2009 Touring Wagon 2.5i Sport 167 HP 4x4 automatic 28.0 MPG
8.4 l/100km
Subaru Legacy 2009 2.5 GT 265 HP 4x4 manual 22.2 MPG
10.6 l/100km
2009 - 2012

Subaru Legacy 2009 sedan fuel economy

Average advertised fuel consumption for petrol engines25.2 MPG
9.4 l/100km
Average real-world fuel consumption for petrol engines28.3 MPG
8.3 l/100km
Average real gasoline consumption difference *insignificant
Average advertised fuel consumption for diesel engines39.9 MPG
5.9 l/100km
Average real-world fuel consumption for diesel engines35.6 MPG
6.6 l/100km
Average real diesel consumption difference *+12%

According to advertised fuel consumption, a Subaru Legacy 2009 with automatic transmission consumes on average 1.2 liters per 100 km or 12% less fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation Subaru Legacy with automatic transmission consumes around 1 litres per 100 km or 11% less fuel than a version with the same engine but a manual gearbox.

The best real fuel economy in its class according to user reviews of all the modifications has modification with 2.0 petrol engine and automatic transmission (Subaru Legacy 2009 2.0i Automatic 4x4 150 HP). However, of all modifications the best advertised fuel economy in its class has Subaru Legacy with 2.5 petrol engine and automatic transmission (Subaru Legacy 2009 2.5i Sport 170 HP 4x4).

ModificationClaimed consumptionReal consumption
2.0 liter petrol engine
Subaru Legacy 2009 2.0i 4x4 150 HP manual 27.7 MPG
8.5 l/100km
26.7 MPG
8.8 l/100km+4%
Subaru Legacy 2009 2.0i Automatic 4x4 150 HP automatic 29.4 MPG
8.0 l/100km
27.4 MPG
8.6 l/100km+8%
2.0 liter diesel engine
Subaru Legacy 2009 2.0D 150 HP 4x4 manual 39.9 MPG
5.9 l/100km
35.6 MPG
6.6 l/100km+12%
2.5 liter petrol engine
Subaru Legacy 2009 2.5i 170 HP 4x4 manual 23.5 MPG
10.0 l/100km
Subaru Legacy 2009 2.5i Sport 170 HP 4x4 automatic 28.7 MPG
8.2 l/100km
Subaru Legacy 2009 2.5 GT 265 HP 4x4 manual 22.0 MPG
10.7 l/100km
3.6 liter petrol engine
Subaru Legacy 2009 3.6R 256 HP 4x4 automatic 22.0 MPG
10.7 l/100km

* - 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.