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HHR Real World MPG Numbers

93 messages,  Last post on Nov 19, 2009 at 10:35 AM

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#51 of 93 Re: HHR: Real World MPG Numbers [pf_flyer] by jsburn Feb 26, 2007 (3:27 pm)
Replying to: pf_flyer (Feb 07, 2006 9:42 am) I was getting 29 MPG in my HHR prior to the engine being replaced. I'm now getting 20 MPG Replies to this message: smogdung (Feb 26, 2007 5:37 pm)
#52 of 93 Re: HHR: Real World MPG Numbers [jsburn] by smogdung Feb 26, 2007 (5:37 pm)
Replying to: jsburn (Feb 26, 2007 3:27 pm) Which engine and transmission do you have?
#53 of 93 K&N air filter by happygilman Feb 23, 2007 (2:06 pm)
#54 of 93 K&N air filter by happygilman Feb 23, 2007 (2:06 pm)
Does anyone know what the gas milage savings are on the HHR 2.2L with a K&N air filter? Replies to this message: jerrywimer (Apr 26, 2007 5:58 am)
#55 of 93 Re: K&N air filter [happygilman] by jerrywimer Apr 26, 2007 (5:58 am)
Replying to: happygilman (Feb 23, 2007 2:06 pm) I've read lots of stuff where people claim to notice gains, but most real world stuff I've seen is minimal, or actually even a loss of economy. The reason is fairly simple- while even power boosts from increased airflow are minimal, power boosts *are* the main effect. And it's because the engine gets better airflow. More air in the cylinder means more fuel needs to be added to keep it from being overly lean. That means more power, but also slightly less fuel economy. However, the real world results seem to say it's mostly driver perception, because even dyno runs show such an insignificant change in power output that build variation from one car to the next can vary as much.   The only really consistent result I've read about (and experienced, but only with a V8 truck- in this case, my father's) is a major increase in engine noise. His pickup got a lot throatier, which I guess is okay if you like growly V8's. I'm not so sure what it'll be like on a four cylinder though.
#56 of 93 W vs WO Air Conditioner by smogdung Jun 03, 2007 (1:44 am)
Anyone else notice a significant difference in MPG when the air conditioner is running? Replies to this message: huffmanshhr1 (Jun 05, 2009 2:12 pm) mbranstner (Sep 28, 2009 7:36 am) dmathews3 (Sep 28, 2009 11:34 am)
#57 of 93 Great MPG here by 94accord_lover Jun 05, 2007 (12:26 pm)
I am posting on the behalf of my grandpa, who is the extremely proud owner of an Amethyst Metallic '06 HHR LS . We live in a very hilly terrain, so lots of acceleration and braking. He can average, short trips, about 28.6-29.3 in normal conditions (temps in the mid 70's to mid 80's). On the highway, it's even better, once getting nearly 38 mpg. That tank averaged out to be 34.7 Mpg. It has not once dropped below 26 MPG. He is very pleased with it, he traded in an '05 Silverado Reg. cab with the 4.3 V6, 4 spd. auto, 3.73 gearing, 17" wheels. It averaged anywhere from 18.5-19.5 mpg, only reached 21 mpg once. Needless to say, filling up the 34 gallon tank became a nightmare quick. He traded it for the HHR, and the difference in payment isn't even half of what he is saving in fuel. Very pleased!
#58 of 93 Been keeping track for a few weeks by ray80 Aug 16, 2007 (8:05 am)
2 weeks of normal driving (not much city stuff at all) 763.7 miles 22.214 gals fuel = 34.3 MPG This past week more city driving and a couple pretty warm morning commutes (plus I felt the need to turn A/C on a few times) 446.3 miles (one tank and no low fuel light on yet) 13.696 gals = 32.5 MPG. not to bad. Replies to this message: deliveryguy328 (Aug 25, 2007 6:42 am)
#59 of 93 Just starting to keep track... by deliveryguy328 Aug 25, 2007 (6:42 am)
Replying to: ray80 (Aug 16, 2007 8:05 am) I have the 2006 LS 2.2L automatic. I drive about 1800-2000 miles a week. On the 3 times I've filled up since I bought the car, (more highway, less city miles) I've been averaging about 29-30 mpg, which is WAY higher than I was expecting based on the EPA estimates. It's about the same or better than my mom's 99 Cavalier.
#60 of 93 DIC MPG VS. REAL MPG by smogdung Sep 25, 2007 (6:37 am)
About 7-8 months ago our dealership did a reprograming or something to to try to improve the tendancy of our 2.4L automatic 2006 to frequently not fire up the instant the key is turned..(slow ignition), about half the time you would have to let it crank several seconds....or, just instantly turn the key back off & try again...always it fires instantaneously on this second turn????? Anyway, prior to the reprograming...the MPG reading was always close to a manual measure or a little optimistic. But, ever since the reprogram....(about 20 fillups)...the manual calculation (at every fillup) is about 1.5 to 2.5 mpg better than the DIC MPG readout? By the way, the reprogram did not improve the slow ignition problem....actually this was the second attempt to resolve the slow ignition..   Still love the vehicle though....   After 20K miles...ave about 26.5 MPG... Replies to this message: poncho167 (Sep 26, 2007 4:06 am) smogdung (Sep 28, 2007 2:48 am)

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