Year: 2009
Model: 1500
Engine: 5.7
Highway: percent 30
City percent: 70
Location Tucson: Az
Octane: 89
Hand or computer calc.
Miles on truck 650
MPG: Hand 17.0 computer 17.4
Mods: None yet

 

Year: 09
Model: 1500 Quad Cab
Engine: 5.7 Hemi w/ 3.21 Diff
Highway percent: 95
City Percent: 5
Location: California
Octane: 89
Hand or Computer Calc: Computer
Miles on truck: 16000
MPG: 18.2
Mods: K&N Drop In, Bed Cover

 

Year - 10
Model -1500 ST Quad Cab 4 x 4
Engine - 4.7
Gears...3:92
Tires-Stock
Highway percent - 90
City percent - 10
Location -Central US
Octane - 87
Hand or computer calc - hand
Miles on truck - 2,300 mi
MPG - 17 avg
Mods - none

NOTE: This truck did not have cruise control when the 2,300 miles were put on. It has now been added but no additional trips yet and this is not a daily driver.

 

Year: 2009
Model: RAM 1500 Laramie 3.92 20" Rims.
Engine: 5.7L HEMI
Highway percent: 90
City percent: 10
Location: Red Deer, Alberta
Octane: 87
Hand or computer calc: Hand
Miles on truck: 15,000km
MPG: 18.2
Mods: Flowmaster, K&N Drop In

340km trip using cruise control set at 118/kmh or 73mph. Temp -1C or 30F. Light wind. Straight and fairly level road. Filled up before I left and filled up again when I got back.

340km used 44L of gas = 12.9L/100km = 18.2MPG (I think I calculated it right! )

 

Went to NewHampshire and back today, about 1000kms....
Averaged 18.88 MPG
At 110KM/ph

Year - 09
Model -1500 ST Quad Cab 4 x 4
Engine - 5.7
Gears...3:92s
Tires-17 and 20
Highway percent - 90
City percent - 10
Location -Montreal, Canada
Octane - 87
Hand or computer calc - hand
Miles on truck - 7000 kms
MPG - 18.88
Mods - none

 

Brand new, this was my 1st tank from the dealer
I know it's a truck, but I was very disappointed
Year - 09
Model -1500 ST Crew Cab 4 x 4 Sport SLT
Engine - 5.7
Gears...3:92s
Tires-20
Highway percent - 90
City percent - 10
Location -Denton, MD York, PA
Octane - 87 w/ 10% ethanol
Hand or computer calc - computer
Miles on truck - up to 400
MPG - 14.5
Mods - none

 

2nd tank, tried different gas, I was happier with the results
Year - 09
Model -1500 ST Crew Cab 4 x 4 Sport SLT
Engine - 5.7
Gears...3:92s
Tires-20
Highway percent - 90
City percent - 10
Location -York, PA to Rochester, NY
Octane - 87 100% gas
Hand or computer calc - computer
Miles on truck - up to 800
MPG - 16.0
Mods - none

 

3rd tank, different gas, getting better again!
Year - 09
Model -1500 ST Crew Cab 4 x 4 Sport SLT
Engine - 5.7
Gears...3:92s
Tires-20
Highway percent - 90
City percent - 10
Location -Rochester, NY to York, PA
Octane - 89 with 10% ethanol
Hand or computer calc - computer
Miles on truck - up to 1100
MPG - 17.8
Mods - none

When I'm ready for my next tank, I'll be trying 89 octane 100% gas. Then I'll be ready for some mods with this baseline information.

I should also note the temperature was about 10 degrees warmer (30-40) from the 1st tank until the 3rd tank full.
Jim

 

Year - 10
Model -1500 ST QC 4 x 4
Engine - 4.7
Gears...3:92
Tires-stock 17s(?)
Highway percent - 90
City percent - 10
Location -MN - IA
Octane - E85
Hand or computer calc - hand
Miles on truck - 2600
MPG - 14.3
Mods - none

 

anyone driving a 2010 2500 with the 5.7L? Gas mileage?