Quote:
Originally Posted by HCI2000SS
I see the gas mileage subject being mentioned between the different models, and have some direct comparisons between my 2018 V6 and my neighbors 2016 V8. Both A8's as well. We both both drive in very similar conditions (90% rural country type roads) and I average 26-27 mpgs, and he averages about 20. His driving style is very similar to mine on these comparisons, which is fairly relaxed. So apples to apples, I'd say about a 20% difference in fuel consumption. Factor in a solid $1 difference between 87 and 93 at this current point, the cost difference in total becomes pretty significant.
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20 MPG sounds like they are hiding something from you... As I mentioned, I managed to get 19 MPG going 70 MPH+ the whole time and I was accelerating regularly to break in.
I can probably get better than that if I am being fairly relaxed in my M6 without AFM and with 90% countryside. 21 to 22 MPG would be my guess. With an A8 I would be expecting 22 to 23 MPG with the V8.
But yeah the cost difference between premium and regular is a thing. You can still feed regular to the V8, it will just pull timing and reduce performance (I read about 30~40 HP loss).
Sent from toaster or something
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Current:
2019 Chevrolet Camaro 2SS 1LE M6 Shock
GM Performance Intake and that's it, because driver mods before car mods
Past:
2009 Mazda RX-8 GT M6 Velocity Red Mica (Sold)
2015 Chevrolet Corvette Z51 2LT M7 Velocity Yellow Tintcoat (Flood totaled)