- Gas saving ideas from Edmonds!
- Gas Mileage
- Gas Mileage & weather
- Mods to improve mpg?
- New forum section - Fuel Economy - Hypermiling
- My "hypermiling" techniques
- Hydrogen
- 08' Mpg Verification
- Commuting choices
- Saving a bit of gas
- What tire pressure are you running?
- Absurd Mileage!
- tires
- Gave it a try today!
- Not exactly "Hyper-milling"
- MPG update -> After PCM tuning
- Project absurd mileage completed!
- Real World MPG improvements
- Scangaugeii Mount Location?
- Interesting article in Dallas Morning News
- MPG lower than others listed
- Mileage mods and strange results
- acetone?
- Aerodynamic
- How does ethanol effect octane rating
- ultimate speed for efficiency?
- Crappy gas mileage in town / Incredible Highway
- Bosh/STP AutoZone coupons, good 'til 1/15/09 (plugs/wires/air filter)
- 37 MPG @ 60 mph
- Mileage run
- Winter wheel/tire combo mpg
- How many miles
- RPMs and Auto Trans
- BAD winter mileage
- A Picture of My MPG
- Milage tidbits
- Instant MPG?
- Pure Gas, No Ethanol
- 85 octane gasoline in Colorado. Void warranty?
- manual hhr?
- 31.69 mpg with 93 octane
- Mixing 87 and 93 Octane?
- my mpg has been going down alot
- 34.0 - 36.8 Avg Mileage
- Hhr xfe?
- So Maybe My MPG Isn't That Bad...
- GM Fuel System Cleaner
- Milage
- coasting
- Share your MPG with other HHR owners
- Gas milage accuracy?
- These vehicles are able to top 40 mpg!!
- 87 or 91 on a 2006 HRH LT
- My take on getting better MPG
- High Fuel Range
- HHR - An Aerodynamic Brick?
- Tall tales and fish stories....
- Adding 2-Stroke Oil to Gasonline?
- Fuel Injector Cleaning
- Tornado vs k&n
- Enjoying my gas mileage!
- E10 vs. E85
- Does anybody else's mpg drop when it gets cold?
- My Gas Milage
- MPG in a 2.4
- MPG versus Final Drive Gear Ratio
- GM was totally wrong on our economy
- Air Filter / MPG improvments ?
- Instant MPG Questions
- MPG on 2.0 Vs 2.4
- Ethanol Free Gas Stations List by State
- Is The Woolly Worm Needed?
- Can I used E-87 Ethanol
- MPG Trifecta Tune?
- Fuel economy has diminished.
- 2007 Gas Mileage
- Got to love that HHR MPG
- E85 Fuel Economy
- finally getting good mpg in the 2.2
- 49 MPG with a 2010 HHR LT2?
- Premium fuel v. Regular Unleaded
- K&N Cold Air Intake
- Gas Mileage at 60 MPH?
- K&N FIPK vs Stock Airbox Mileage
- why would my gas mileage drop
- locking gas cap for an 07 hhr
- Topping Off
- edcaravan | poor gas milage in the winter ?
- hhr fuel economy
- Hypermiling
- interesting fact
- Gas mileage
- Ethanol fuel
- Gas Mileage changes 2006-11?
- Best of 25+ mpg so far (2.2/auto). I want better!
- E15 gas, is it coming near you ?
- Convert FROM E85
- MPG 2.4 vs 400hp Vette
- Anyone ran taller tires?
- Ethanol - Will it go up?
- 626.4 miles on one tank!
- Doing ok in my HHR so far
- low fuel on dic
- Tried some hyper miling on the way to work today.
- End of ethanol subsidy
- INST gear vs. Cruise Control MPG efficiency
- Long road trip and hoping to get 500 miles per tank
- GForces chips
- How accurate is the MPG detector computer thing?