In the AMG sports car, the M178 will energy each the launch GTS (503 horsepower)—which we rode in last month—and the simple GT to come later (about 475 horsepower). But the GT is only the beginning for the new powerhouse and its variants, as it will be fitted in the next C63 AMG sedan and coupe. We should see at least the C63 sedan later this year prior to it arrives right here in the fall of 2015. About that very same time, we have discovered that Mercedes will launch an AMG version of the subsequent-gen GLK powered by the very same engine. And the M178 will appear in the subsequent-generation E63 AMG in 3 years or so.
Eventually, almost every AMG model that is primarily based on a rear-wheel-drive platform will use the new engine, which consists of the S63 AMG and the ML63 AMG. 1 of the principal factors is that the M178’s 4.-liter size is advantageous for tax considerations in some global markets. It is for this very same cause that Audi’s twin-turbo V-8 characteristics the same displacement.
The exceptions, of course, are AMG’s front-drive-primarily based models, which incorporate the CLA45 and the GLA45 they’re powered by the M133 2.-liter 4-cylinder, which could be deemed “half” of an M178. Of course, the twin-turboed M275/M279 V-12 will continue.
Forgetting for a moment our unending grief regarding the death of the naturally aspirated 6.2, the proliferation of the M178 is a great point. It’s a compact and powerful engine with dry-sump lubrication and its turbochargers nestled inside the cylinder banks in an efficient—and Benz first—“hot-V” configuration. Features like its “Nanoslide” cylinder-bore surfacing (primarily a thin, porous coating of iron) and forged-aluminum pistons enable for higher peak turbo pressure and a lofty 7000-rpm redline. See, we told you the engine was getting revved up.
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