Fuel Tank Capacity Which is it?
 

Here is GM's data on the fuel tank capacity.

1) 2007 Canadian brochure:2) 2008 GM Canadian Web Site:3) 2008 GM US Web Site:That is three different sizes. Which is it?

2007 LT 16 gal
 

My manual says 16 gal for my car a 2007 2.2 LT. That seems about right but I have only put in 12.3 gal. at the most. Just got my car with 29000 miles on it and put 4000 miles on it in 28 days. I never let it go below 3/4 tank and I usually cruise at 80 on the interstate.

its 16 gal

16 gallon US = 13.322 imperial gallon :smile:

16.2 gallon US = 13.489 imperial gallon

My manual says 16.2 gallons

2008 HHR SS

My manual says 16.2 US GAL.

I have filled up right at the 1/4 tank mark, and it took 12 gallons.
I have filled up at the 1/2 tank mark, and it took 8 gallons.
I have filled up at the 3/4 tank mark, and it took 4 gallons.

I wont fill up from empty.

lastly, the needle does go slightly above full, which would probably support the 16.2 gallon theory.

If you would care to see what each of the 3 (2006, 2007, 2008) US Owners Manuals say, you can locate it in the on-line owners manuals that were courteously posted by our Moderators...here.....

https://www.chevyhhr.net/forums/general-hhr-4/online-owners-manual-3074/

I put 16.1 gallons in it one time on a long trip. That was very surprising since I thought the tank was only 16 gallons.

You were almost getting ready to walk... ;)

Yes, I was! The total mileage I can travel on a tank of gas is higher in the HHR than in my old minivan. I almost forgot I needed to fill up until the LOW FUEL message appeared on the DIC. Fortunately, the next exit on the interstate did have a gas station or I would have been walking!