Most successful v8 cars?

[bandit86]

I read a long post here about a impala wagon with crazy mods, and I've been thinking about it ever since. Like, what other V8 cars got close to or over 40 mpg?

[freebeard]

My son's Silverado with cylinder deactivation.

Xist just found a 2008 Impala SS for $900 in AZ.

If you're going to do all those modifications, I'd start with a 1991-96 Buick Roadmaster They came with a moon roof and fender skirts.

[bandit86]

I heard the 2011 mustang 4.0 6 banger was a 40mpg car out of the gate, I thought someone would have cashed in on that already

[cRiPpLe_rOoStEr]

Originally Posted by bandit86

I heard the 2011 mustang 4.0 6 banger was a 40mpg car out of the gate, I thought someone would have cashed in on that already

I wouldn't hold my breath for that, specifically, but let's consider some 6-cyl engines are very close in displacement to the smallest V8 within the range of its manufacturer. With fewer moving parts and internal frictions, maybe a V6 into a full-size car could fare much better than a V8 regarding fuel economy, and not so bad performance-wise.

[mpg_numbers_guy]

Originally Posted by bandit86

I heard the 2011 mustang 4.0 6 banger was a 40mpg car out of the gate, I thought someone would have cashed in on that already

40 mpg under light throttle on medium-speed highway cruising doesn't mean the car will average 40 mpg under all situations.