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HHR Real World MPG Numbers



  • Thanks for your response and yes, the more we drive it and really learn the car, the more we love it! Like the dealer did not tell us that the 2.4l needs premium to run smoothly.I believe it said 90+? Id have to look. But reading the manual and on this site, Im learning about things I didnt even know I had! Like a subwoofer. lol

    I am in total agreement with you.We would only get rid of this one now for a newer HHR!!! This car can function like a small truck, has great options, handles well, and gets good gas milage if your vigilant about your tires, your "lead" foot, the gas you put in it etc....Here in Louisiana we will run that air constantly so that will affect it alot, but no more or less than any other car.

    I had asked in an earlier post if anyone knew if we could get the options of the 2LT2 with a manual trans.? Thats the only thing we feel we would prefer but dont want to give up all my options. (I know auto start will not be available in a manual for obvious reasons)

    One more thing. For the second time, our engine light has popped on just yesterday. The first time, when he hooked it up to that machine it said mis-fire. Should we take it in or just clear it again? We have a one year bumper to bumper warranty on it. and it is a certified used car.

    thanks again.,
    C Huffman
  • cruiser25cruiser25 Posts: 1
    Just purchased a new 2008 LT2 2.4 motor with the 5 speed, leather,etc. from a local dealer. Only have put about 1000 miles on, so have not bothered to check the mileage will do so next month on an extended trip (mtns., deserts, etc). Have been only using regular 87 Octaine and have not experienced any difficulty, I do know that the SS 2.0 requires 91 Octaine or better. My question is- what is the best way to lower this vehicle for the best ride and to make the car look lower, sits kind of high for me with the 17" wheels. What company makes the best coil spring? Thanks Rich
  • kentshhrkentshhr Posts: 1
    I have a 2009 HHR LT2 with the 2.4 L . When I first got it the mileage wasn't so good, (20 city, 26 Highway) took it to dealer who told me that Chevrolet recommends number 1 tier gasoline, example, Chevron, or Shell etc. also most gasonline has a ethanol blend that causes the mileage to drop, try gas without the ethanol, I did and have a vast improvement. I am now getting 27 mpg city and 34 highway, I still just have 3200 miles on the odo. My LT is loaded with Leather etc, I know that you can find a manuel just as easy for it as a automatic, I have the automatic, I really like the remote start. You can reflash the ecu, but the dealer told me if you have latest update it is not necessary. BTW the AC in the modern cars are not suppose to make much of a difference, and mine doesn't seem to maybe 1 mpg and the spark plugs are 100,000 mile plugs. I am extremely happy with the HHR, and would love for my wife to get one, but she seems happy with the Suburban. Although we plan to take our kids to Lagoon in Utah next week, it will cost us $102 in the Suburban and $22 in the HHR. Did I say I love my HHR?:)
  • manny48manny48 Posts: 1
    Gas mileage in you HHR has ever so much to do with how you drive it. I have a 2007 2.4 motor as well and I watch the DIC religously. The key is not shoving your foot into the gas pedal and accelerating lightly. Watching the DIC MPG readout and gauging your driving habits is instrumental in getting the best gas mileage, and it takes some time to undo old habits. I've been able to get as little as 23.5 MPG out of a tank of gas as well as 31.7 MPG out of a tank, all dependant on how I drive... the same for you I can assure you. Keep in mind, my numbers are all 50/50 mix of city/hwy driving. I'd be willing to guess my highway numbers would e around 33 MPG which isn't bad. Put my wife behind the wheel with the car, guarantee 5-7 MPG less, she drives fast and accelerates up to a red light. Hope this helps.
  • OMG I laughed so hard , and thank you for responding!
    Im laughing because I am the wife, and my husband ALSO gets superb! mpg vs My numbers! We make a game out of it and why not!? What better game than one that saves us money!? His numbers, not matter WHERE no matter WHAT the conditions are are always 7-as much as 20 miles better than mine!
    Having had our '(07 2.4 auto ) about 4 months or so now; I could not agree with you more than to say it is not a wasted feature! We watch ours religiously and do average 25.-27 now in the city! What burns me up is almost every single time he gets out if it it reads 27.7-30(city!!!) and i get in it and within a few miles it has dropped to 23-25. grrrrr :P I dont accelerate to a stoplight but Im heavy on the foot from the line!l:) After 4 months we still LOVE our car and would buy a new one in a heartbeat if economics would allow( only I happen to be a big fan of where our window controls are so I would want my year!LMAO)
    I like to tell this story often and encourage others to try our new favorite car. I cannot remember ever loving a non-sports car as much as I do my "baby girl"
    The only things we wish we had is running boards, a stick shift(oh it would be on then!)_ and wish we could have picked the color. We have the navy blue with the dx package of pinstriping etc, but I really like the pearl white and he likes the silver.
    ANYWAYS, thank you for your respunse again. I could not agree with you more that it pays to watch the DIC. Not only pays, but can be alot of fun to lighten the mood and have he/she wars! :shades:

    2Huge fans of the HHR !!
    Dave and Carol
  • Frankly, your posting is just plain stupid ... No A/C results in a 40-50% loss in fuel economy, unless your vehicle is seriously screwed up.

    Mark B.
  • dmathews3dmathews3 Posts: 1,739
    and your posting is just plain RUDE :P Lighten up, you could have posted the last part without the first stupid part included.
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    Debate without the unnecessary jabs, ok?

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  • yes>i would have to agree that was rude and a bit assuming of you. I am not a dumb, car illiterate wife. I should have gone back and retracted (part of )that statement. When I realized that what I thought was being caused by air alone was being caused by both a small percentage air and another percentage the gas I was putting in it. Yes, in MY car (2.4) when I switched from the 87octane I was used to putting in our buick to the 93 I now put in it I got as much as a 40% difference. If I had known it was going to prompt a name calling fest by not correcting my mistake I wouldnt have made such an error. I apologize if I misled any other HHR owners with my statements.
    Thanks for taking something I once really enjoyed and putting a major cramp in it. I am every bit a woman in that way and do get my feelings hurt easily. :P ****
    Im happy to see however that these posts are monitored for such a thing though.
  • Here is what I have found out on my 2.2 hhr, You need to keep the RPM's below 2400. That means typically 65 mph, and really gentle on the starts. If I do I can milk out close to 34 actual, but it does suck getting passed by P.T. crappys !!!!
  • I see you have the 2.2 L engine.
    How performent is it? Powerful enough?
    How is it in the hills and mountain driving? (if any).
  • I purchased a 09 HHR 2LT with 7k on it. 2.4L,Auto trans. Liked the ride, not the get up. Upper end pep was ok enuff to buy. Needed room for grand babies.
    I put on a SLR Motorsports module. Easy install. It did not improve mpg like stated, but seat of the pants performance is noticeable. It will scratch the tires from standstill, which it was not even close to before. Mid range performance has increased significantly and top end is the same. On a 400 mi. round trip recently I got 24.8 mpg. That is with 80 mph cruising and about an hours worth of 95-105 mph running with a beamer and an expedition (of all vehicles). I drive 28 mi. round trip 4days a week to work. Highway. City driving is approx 10%. My foot stays in the throttle. I have fun in my ride, and I drive with a purpose.... To get where I am going. Have never gotten below 24.5 mpg. I really dig this little ride. Handling is excellent, except they could work on some torque steer control.
  • How many miles did you get on a tank of gas (highway driving) at with the 2.2 L engine? I usually drive with cruise control @ 68 mph.
    100% highway driving if possible, I've got a cross country trip to do, 3,000 miles.
  • riley34riley34 Posts: 12
    I have an 09 HHR LT2 with automatic, just downsized from a mid-sized SUV. Just drove 700+ miles from NC to So. FL via the I-95, very pleased with the highway handling, rides heavier than it looks. Two people with rear seats down and fully loaded, we averaged 26 MPG on regular. Using AC affected the mpg by 1 or 2.

    Starting using flexfuel in FL with mostly city driving and lots of lights and stop signs and I am getting 16-17 MPG. After 2 tanks.
  • sbeckssbecks Posts: 5
    With my driving style I am averaging 24.5. I have not had a chance to flex fuel yet. Is your mpg still way down? That sucks. Unless flexfuel is like..... a buck a gallon, it doesnt seem like anything special. What the hell is flexfuel anyways? Later.
  • paopao Posts: 1,867
    is your HHR flexfuel capable.....if not..that could be the reason for the lower should have the Flexfuel emblem on the back under the HHR
  • laserbluelaserblue Posts: 313
    Flex fuel is used in flexible fuel vehicles that accept both standard gasoline as well as e85. E85 (flex fuel) is a mixture of 85% ethanol fuel combined with 15 percent gasoline.
    But when I'll receive my 2010 HHR, I'll be using the real stuff (gasoline).
    The question is....regular or premium?
    It's a 2 LT and comes with the 2.4 L. engine and I heard that it's better to run it on premium grade gasoline.
    Is this true?
  • dmathews3dmathews3 Posts: 1,739
    I have the 2.4 in my 08 and run reg. all the time. I have seen no difference in mileage or power. I'm sure there may be some but the only difference I have seen is by how fast I drive.
  • gmcustsvcgmcustsvc Posts: 4,055
    I am from GM Customer Service. This information comes right out of the 2010 HHR's owners manual. If the vehicle has the 2.4L L4 engine (VIN Code V) or
    the 2.0L L4 engine (VIN Code M) use premium unleaded gasoline with a posted octane rating of 91 or higher. You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle’s acceleration could be slightly reduced, and a slight audible knocking noise, commonly referred to as spark knock, might be heard. If the octane is less than 87, you might notice a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you could damage the engine. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
    Thank you,
    Mariah GM Customer Service
  • sbeckssbecks Posts: 5
    Thanks, but I do know what it is. Question is how long is going to take them to refine it enough to be worthy.
    There is no question as to running regular or premium. To run regular unleaded is absurd. The gamble you are taking, compared to the little bit of savings at the pump, and the performance loss, is totally obvious.
    I alternate between medium grade and premium and really experience no performance change. I pretty much run the crap out of my little ride, so I am at least going to feed it well.
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