2006 STS 1SG & 2007 STS 1SE
No offense intended. Sorry.I have the window sticker. It is a 2006 2wd, not AWD, 1SG, and the EPA #s are 17/26. There is no gas guzzler tax on the sticker. The car is under warranty. If 23 mpg at 70 is normal, I can handle that. If it is not, I will take it to the dealer to fix it. Just looking for a little help from my new friends. BTW, here in the Atlanta metro area we have 'boutique' fuel. (Thank you EPA!) Is it possible the energy density in the summer blend is less than optimum? Thx!
What RPM's do you have at 70 MPH?