I purchased one of the first HHR's in mid-September 2005 (2006 model) loaded with every option available at that time, and some that would become available in later model years. I used an aftermarket Eaton M62 to supercharge it in 2008.
Very nice vehicle!!! Loved the baggy fenders, Corvette-inspired taillights, et al.
Excellent MPG ( 30+, when I kept my foot out of it), plenty of storage/loading capacity, comfortable to ride/cruise in and vacationing.
I'm a "short-6'1", and had absolutely no issues with entrance/egress...Neither did the Wife.
Never had any "brake-issues"...never heard of anyone having any, either.
Believe me...The Wife was very, very upset, to say the least, when I sold it last year....Even though I got more money for it than my initial purchasing price!
IMO....A Good-Value vehicle...let alone well-kept HHR's are still a head-turner.
NOTE:
If you do wind up buying this HHR...Keep me apprised...I've got an almost brand-new, HHR custom-car-cover you can have.
Bob