The G8 V8 and V6 run on 87 octane. Here is what it says in the owners manual:You can still put 87 in it- I don't think it hurts it, does it?
As far as mileage, the G8 GT is 1. a large sedan with plenty of room and 2. a performance car."If the vehicle has a V8 engine, use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you might notice an audible knocking noise when you drive, commonly referred to as spark knock. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, the engine needs service.
You have your priorities, but others have theirs. Many buyers are very much concerned about fuel economy. Automobile manufacturers and their dealers are responding to their concerns. Manufacturer-sponsored newspaper ads around here are touting cars that get 35 mpg.I don't consider a vehicles mileage when looking at a car. I still don't know anyone in my family or close friends who does and some of us drive 40k+ a year.
The world is changing. The USA in time is going to be a lot more like Europe as far as vehicle choices are concerned. As gas creeps quickly towards $4 a gallon it's going to become a HUGE factor in choice of cars for the majority of the buying public. I have five cars. Two are commuting cars for me and my wife (we both commute 30 miles each way), my daughters have one in college. I have an 84 Corvette that's driven quite a bit. Our Escalade usually sits in the driveway and it's lease is up in two months. Just filling the cars up with gas is running close to $1000 a month.I would be lying if I said I wasn't second-guessing my thoughts on purchasing a G8 GT. I don't know, I kind of want to see real-world gas mileage numbers before I decide though. If the real-world numbers aren't far from the EPA numbers, then I will keep considering one.
You've been a member for 2.5 years, and you just got around to making your first post?!I was planning on making the G8 tops on my list when the Caddy lease expires, but with gas hitting $4.00 and the G8 GT requiring premium fuel and only getting 15mpg per EPA, my days of wasting money to go from point A to B are over. How does everyone feel?