OK I have had my HHR a few weeks now and I have verified the MPG counter against my mathematic ablities...........all 3 times, the display is dead on to the math. example: HHR=28.6, MATH=28.6471... let me add I only have 867 miles so far.

What a fantastic car to drive! Is this thing a car or a truck? What the heck do you guys or gals call it?

I have also noticied that running the A/C is detrimental to the MPG, but not running the A/C chaps my arse........

 

https://www.chevyhhr.net/forums/show...ght=call+truck

 

And I get 27-28 average on my tanks all the time, wonder what I would get without it? Probably will not find out for a while, I move to Hawaii in September.

 

I have an '08 too with 600 miles. Don't forget the MPG will get better once our engines are broken in.

 

Yes I know, and I have tried to read as many threads as I can here, and I have learned that some say after as much as 15000 miles they continue to see improvements.

 

Cookz32, how are you breaking it in? The payoff of the right break-in technique is good MPG early in the game, like you are getting. It means your piston rings have seated well. Now, as miles accumulate and the engine loosens up a little more, MPG should further improve. Your oil consumption should also be extremely minimal between oil changes.

 

I didn't drive it hard, and I didn't drive it easy. I stayed out of the cruise control for the most part and when I did use it I tapped it around, say up and down in 10mph range. Also I have had passengers and carried a little cargo around, I believe I followed what I learned here, but the advice was a broad range, so I tried to stay in the middle. Time will tell, but so far she seems like a great runner. The car is everything I expected, except for the lame shallow cup holders, that are completely worthless, as every corner or turn the item in the holder goes for a ride. I have been studying the design of the entire center console, and I think I will make one out of wood or fiberglass and mold one, not sure yet, and I would do it this winter. I'm thinking of making one much taller, and possibly enclosing the entire parking brake handle inside a box to hold more stuff.

 

Same baot here. About 800 miles on her and have averaged 28.9 overall. On a multi-hour highway trip that I wasnt in a rush on, I cruised along in the right lane at 60mph and got an astonishing 36.2mpg!

 

Don't be astonished. I have driven 515 miles with out the low fuel gauge blinking at me. 60mph on cruise. Right now I am seriously hypermiling an getting 33.9mpg mixed 50 city 50 highway.....35mph average speed over the last 140 miles.

Realize that means 30 in the city and 38 on the highway.

 

I got my 08 HHR in March and had 68 miles on it, its now middle of July and I have 24,000 on it. I started out at getting around 26 to 27 MPH with Air and Highway driving. Now I don't get much better I have seen about 28 to 29 with Air and Highway. I do drive around 70 or a little over on the highway so that not bad with the Air going and at that speed. I am happy with it.