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The upcoming W213 Mercedes-AMG E 63 will only arrive as an all-wheel drive model, according to company boss Tobias Moers. Speaking to Top Gear, Moers said the decision to not offer a rear-wheel drive version is due to the demands of the market.

“We are going to introduce a completely new four-wheel drive system, one which we’ve never had in the company. That’s going to be the biggest step we ever did with a generation. In Germany, we had the choice of 4×4 and 4×2, and 90-plus percent bought the 4×4. People in that segment are looking for four-wheel drive,” Moers said.

For power, Moers confirmed that the 4.0 litre biturbo V8 engine (M177) from the GT and AMG C 63 will be deployed on the new E 63. “It’s a different level of power output. The block, crankshaft and so on are going to be the same, but the cylinder head and arrangement of turbochargers are different, though it will be a ‘hot in V’ as well,” he explained.

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Back in April, performance details of the new E 63 were leaked ahead of its official debut. According to the photographed documents, two variants of the E 63 will be offered. On the base E 63, the mill is claimed to output 571 PS and 750 Nm. Meanwhile, the E 63 S gets 612 PS and 850 Nm to play with.

Both engines are mated to a nine-speed MCT automatic transmission along with 4Matic all-wheel drive system. From a standstill, the E 63 will hit 100 km/h from a standstill in just 3.7 seconds, whereas the E 63 S accomplishes the feat in 3.5 seconds. These figures are an improvement over the outgoing W212 Mercedes-AMG E 63. Other details about the super sedan/estate include the lack of rear-wheel steering. “In the E-Class, there is no need for rear-wheel steering,” Moers said.

The W213 Mercedes-AMG E 63 has already been spied on countless occasions, in both sedan and estate body styles. These prototypes were seen not only in the cold, but on the track and public roads as well. As most of the test mules look near production-ready, the model is likely to make its debut soon, with some expecting a Paris Motor Show reveal.

GALLERY: Mercedes-AMG E 63 spyshots