The new Merc has a 4.0 V8 twin turbo and seems to be getting rave reviews. Lexus has done well in other areas but need to get it right in the small saloon market (with a new ISF engine) and appeal to the masses, if they're going to gain traction on the likes of bmw/Merc. As much as I love them, another V8 naturally aspired 400 and something BHP, 0-60 in 4. Something won't help them commercially.