Mercedes-AMG C43 with 4-cylinder M254 engine and electric turbo with 390 HP

The same power but 2 cylinder less
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The next Mercedes C-Class, codenamed W206 will also have a basic AMG version. The Mercedes-AMG C43 will have under the hood a new 4-cylinder turbo engine codenamed M254 with electric turbo.

Photo: auto motor und sport

Increasingly drastic emission standards are making their mark on large-displacement engines. Until now, the only Mercedes-AMG models with 4-cylinder engines were those in the compact range from A-Class to GLA.

However, for the first time, the future basic AMG model in the C-Class will give up two cylinders in favor of a more economical 4-cylinder.

No M139 from A35/A45 AMG 

The Mercedes-AMG C43 is currently powered by a 3-liter twin-turbo V6 coupled with a 9-speed automatic transmission and all-wheel drive that delivers 390 HP. We expected the new basic Mercedes-AMG C-Class  to use the M139 turbo engine from the A35/A45 AMG which provides 387 HP/480 Nm or 421 HP/ 500Nm but Mercedes has made another decision.

M254 engine with electric turbo and 390 HP

But Mercedes will use the 2-liter M254 4-cylinder engine that is part of the same family as the 3-liter M256 6-cylinder in-line that has already been electrified as a mild hybrid version.

The 3-liter M256 6-cylinder engine debuted in 2017 under the hood of the S450 W222 and was developed in two power stages with 367 HP/500 Nm and 435 HP/520 Nm. The 367 HP version currently runs on the S 450 4Matic W223, E 450 4Matic W213, CLS 450 4Matic, GLE 450 4Matic, and GLS 450 4Matic while the top 435 HP version is found on the S 500 4Matic W223, GLE 53 4Matic, CLS 53 4Matic and E 53 4Matic W213.

The 4-cylinder M254 engine has, as in the E 200 and E 300, an integrated 14 HP starter generator and a 48V network operating as a mild hybrid. Completely new is the electrically driven turbine that will help increase power to 390 HP, exactly as the AMG C 43 currently has.

It is not yet clear what the name of the model will be, whether it will remain AMG C 43 or will be called AMG C 53 just like other larger models.

In terms of design, there will be a bumper with wider air intakes while in the back you can see the four exhaust pipes grouped two by two. at least for the AMG Mercedes models it gave up the false exhausts. The interior will be oriented according to the layout of the new S-Class with the portrait screen of the multimedia system that occupies almost the entire center console.

The new C-Class sedan and T-Model will be presented in April 2021 and the AMG version will appear in December 2021.

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