Last post on Nov 14, 2012 at 4:32 AM
You are in the Chevrolet HHR
What is this discussion about?
Chevrolet HHR, Wagon
#11 of 20 Re: 2.2 vs 2.4 differences [ray80]
Jan 02, 2009 (4:28 pm)
With the knock sensors the timing is automatically adjusted to prevent that. I haven't heard any knocking in a new car for years.
#12 of 20 Re: 2.2 vs 2.4 differences [poncho167]
Jan 03, 2009 (11:17 am)
I was referring to what is stated in manual, I know many run 87 octane and haven't reported any troubles.
Jan 22, 2009 (5:37 am)
I am driving a 2009 HHR now as a rental while my car is in the shop for warranty work and it has the 2.2 engine. With 149HP, this must be the same engine Saturn uses as the HHR drives a lot like our old VUE did.
#14 of 20 Re: ray80 [draymond2]
Aug 29, 2009 (3:44 am)
Since we got our car 4 months ago, I can promise you this ....you WILL motice a harder feel and the knocking mentioned if you do not put premium fuel in the 2.4. as it details in the manual.
I did not realize this when I first bought it and was complaining ab my mpg. After i fixed the error, my mpg is now where it supposed to be , even better . So you are not really paying more if your gas milage increases. If you do the math, it comes out right. i dont have any figures in front of me and I appologize for that,.but im on the rn this morning! But all in all, using the premium has not been a problem or cost us any more.
#15 of 20 2.2 vs 2.4 differences
Feb 27, 2011 (9:02 am)
The diff between the 2 are Hp ratings and the 2.4 Does reqiure Premium Fuel . Look in your owners manual, we found out the hard way . The engine started to ping and act like it was missing so I called the Dealer and asked the service manger about this and was asked what grade of gas we were using . We started putting Super iin it and the problem went away.
#16 of 20 Re: 2.2 vs 2.4 differences [cmyre]
Feb 28, 2011 (5:04 am)
My HHR is a 2010 LT with the 2.4 L engine and I never filled it with premium gasoline always regular but "Top Tier Gasoline" if possible.
It has 26,000 miles on it, went on a cross country trip (2 adults) with cargo area fully loaded (back seat down), got 32.2779 m/p/g max. (prairies 70-75 m/p/h.) and 27.9989 m/p/g min. (rockies 65-70 m/p/h. ).
Never heard a pinking sound what so ever.
Premium gas is "Recommended" but not "Required" (owner's manual).
Big difference between those 2 words.
#17 of 20 Re: 2.2 vs 2.4 differences [laserblue]
Feb 28, 2011 (5:13 am)
Following my last "Reply" to (cmyre).
These are the "Top Tier Fuel" (recommended) for the 2.4 L engine in the HHR. Stay away from "Ethenol" gasoline (even if it's only 10%) for better m/p/g.
TOP TIER Gasoline Retailers:
Aloha Petroleum Phillips 66
Chevron Canada Rebel Oil
Conoco Road Ranger
CountryMark Severson Oil
Entec Stations Shell
Esso Shell Canada
Exxon Sunoco Canada
Kwik Trip / Kwik Star Texaco
MFA Oil Co. The Somerset Refinery, Inc.
Mileage Stations Tri-Par Oil Co.
Mobil Turkey Hill Minit Markets
Jun 17, 2011 (8:35 am)
I didn't realize about the premium gasoline until I read these threads here. As I mentioned before, my best friend used to be an engineer at Exxon/Mobil and he told me never to use the higher octane gas until your car "needed" it because once you start using it, you will have problems if you ever go back to 87. After reading these threads on fuel economy, I noticed my car was missing a little when I accelerated going up hills. (Never had any knocking or any other acceleration issues. Just on hills.) I asked him about it, and he told me to check my manual and if the manufacturer "recommended" higher octane gas to put what it said in there and never change back. I put 93 octane in on my last tank, and I am already noticing an increase in MPG of a few miles, not to mention no more acceleration issues.
Also, to touch on what the last poster said, my co-worker's husband is a GM master mechanic at a Chevy dealership, and he said it matters less what octane of gas you put in and more of where you are getting your gas. He said it is more important to get high quality gas and avoid the cheaper gas stations.
I never bought a Cavalier with the 2.4L engine, but I can't imagine having an HHR with a 2.2L. It just seems like with the greater curb weight it makes sense to have a little bigger engine for more pick-up.
#19 of 20 Love this car.
Nov 13, 2012 (11:00 am)
I have a 2007 LT2 that has the 2.4 and is closing in on 100,000 miles. Other than the heater fan "bird chirp" that every GM car I have owned in the last 20 years has had I have no complaints.
Costco for gas and get 26-28 in everyday use, about 30-32 on the interstate.
I like it so much I am hunting for a low mile 2011 so I can keep one around for a lot longer.
#20 of 20 Re: Love this car. [coz_11]
Nov 14, 2012 (4:32 am)
Pretty much the same m/p/g here with my 2010 2.4L with 25,000 miles on.
To bad the last production line are the 2011 models.
Probably it was to good G.M. had to stop building them?
Looking towards the new Chevrolet Trax or the Sonic "Hatchback" but only in 2015/16 otherwise it would have been another HHR.