Nearly all the major design elements are identical to those of the new C-Class Coupe, to the point that telling them apart is tricky. The smaller of the two wouldn't have those horns on the hood in this particular trim level (they do on the AMG models), and the trunk spoiler is more pronounced on the E-Class. But that's about it!
It will be interesting to see if the E-Class Coupe borrows all the engines from the E213 sedan or it gets some from the S-Class facelift.
We'll remind you that an inline 6-cylinder with twin turbocharging called M 256 will be found under the good of the flagship. Thanks to the 48V electric system powering a 20 hp integrated starter-alternator, this new mill is said to be 15% more efficient than the V6. Over 408 PS and more than 500 Nm (369 lb-ft) are the numbers you are looking for.
We guess that this particular prototype is equipped with some kind of four-cylinder mill. This could either be the 2.0-liter turbodiesel found in the E 220 d sedan or the new M264 gasoline mill that will give Audi a 270 horsepower run for its money.
The S-Class is also likely to get Mercedes’ most powerful diesel engine to date which is an inline-6 called OM 642 producing over 313 horsepower. We think there's absolutely no point in ever fitting the E-Class Coupe with the old V6 diesel, since it's ancient technology. But all that that could mean a six-cylinder won't be available too soon.