Regarding stock vs modded.... I tweak everything I own (not just vehicles) in some way, shape, or form... So, I'm sure it would see some mods (probably exhaust, CAI, if needed, and likely tune at some point if budget allows). Within the first year of having the Escape, I had the stock exhaust cut off behind the 2nd cat and a 2.5" installed. Mileage went up almost 3.5 mpg just by doing that, and it honestly sounds quieter at highway speeds since it lowered the pitch of the exhaust note. Not sure how much I'd mod the Focus ST since there's things like paying for 8 kids to eat that take up a big chunk of my paycheck and it's already almost as fast as the 99 Neon RT I used to have which had a ton of mods, but I doubt I would leave it completely stock.