Might have a runner-up for efficient V12. The transmission, undoubtedly, will be holding it back. That being said, I couldn't help but be the first person to commit an automotive crime by coupling a V12 to a nine-speed slushbox.
- Storm Sentinel - LS-2.png (1.23 MiB) Viewed 5420 times
24.5 US MPG, in a car that is designed to be comfortable, easy to drive, but still kinda fun if you want to let it unwind a little.
- Storm Sentinel - LS-3.png (1.25 MiB) Viewed 5420 times
And yep, that's a 9-speed slush-o-matic hooked to a nice 6 liter V12. Shame we don't have CVT's yet, or I'd have used one of those instead. Maybe some other time.
Oh, and that's using my typical "Regular Unleaded Only" build. And VVL, which I rarely ever use, because two cam profiles becomes a pain sometimes. With an Eco tune (15:1 air:fuel ratio, low cam profile, highest compression possible with such low fuel mix and cam) just to try to make it a little less thirsty.
Used Partario's new executive car body, but built in 2015 because I felt that was a good starting platform for a test of both the new body and of course, the never-before-used 9 speed automatic. (at least, I've never typically used such crazy automatic gearboxes. Typically, the most I use them for is up to about 4 or 5 speeds, and only in cheap, tiny cars that need lots of drivability.)