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ever_green · 03-31-2015, 10:07 PM

I totally believe you got 7-7.5 L/100km (29-33mpg) for 100-120kph (65-75mph) highway driving. I have been getting slightly higher consumption 7.8-8.1 L/100km (29-30 MPG) with my 2.5L Subaru at those speed ranges with similar conditions. EPA on my car is 11.7/100km (20 MPG) city and 9.0l/100km (26 MPG) highway.

I noticed tires, temperature and wind are very crucial. I get about a ~0.5L/100km (~2 MPG) gain with every 10-15c increase in ambient temperature. On a non windy day mileage improves by 0.2-0.7 L/100km (0.5-1mpg) vs windy one depending on speed and direction. My roadtrip Higher profile skinny tires with low resistance rubbers improve my mileage too by another ~0.3 L/100km (1 mpg). I haven't noticed much difference with tire pressure changes though.

03-31-2015, 10:07 PM	#14 (permalink)
ever_green Master EcoModder Join Date: May 2011 Location: Toronto Posts: 264 gueff - '19 Mercedes Benz A250 4MATIC AMG 90 day: 30.55 mpg (US) Thanks: 8 Thanked 79 Times in 33 Posts	I totally believe you got 7-7.5 L/100km (29-33mpg) for 100-120kph (65-75mph) highway driving. I have been getting slightly higher consumption 7.8-8.1 L/100km (29-30 MPG) with my 2.5L Subaru at those speed ranges with similar conditions. EPA on my car is 11.7/100km (20 MPG) city and 9.0l/100km (26 MPG) highway. I noticed tires, temperature and wind are very crucial. I get about a ~0.5L/100km (~2 MPG) gain with every 10-15c increase in ambient temperature. On a non windy day mileage improves by 0.2-0.7 L/100km (0.5-1mpg) vs windy one depending on speed and direction. My roadtrip Higher profile skinny tires with low resistance rubbers improve my mileage too by another ~0.3 L/100km (1 mpg). I haven't noticed much difference with tire pressure changes though. Last edited by ever_green; 03-31-2015 at 10:20 PM..