Biturbo 4.0-liter V8 is rumored to deliver 525 horsepower in the DB11.

More than three years ago, Daimler and Aston Martin announced a technical partnership allowing the Gaydon-based sports car manufacturer to access Mercedes’ electric and electronic architectures as well as the AMG engines. In exchange, Daimler received a stake in Aston Martin which in August 2014 grew to five percent.

Now, Aston Martin is out and about testing a camouflaged prototype of the DB11 featuring an AMG-developed biturbo 4.0-liter V8. According to Autocar, the engine will be introduced either next year or in 2018 and is going to produce somewhere in the region of 525 horsepower (391 kilowatts). It won’t be the most powerful iteration of the engine, as it already generates 577 hp (430 kW) in the recently introduced Mercedes-AMG GT R.

We should point out the all-new DB11 already has some bits and pieces sourced from Mercedes and soon it will have an AMG heart, too. It will join Aston Martin’s biturbo 5.2-liter V12 engine which pushes out 600 hp (447 kW). The smaller engine will make the DB11 a little bit lighter than the V12 version which tips the scales at 1,770 kilograms (3,902 pounds). But with significantly less power, it will still be slower than the V12 which runs to 62 mph (100 kph) in 3.9 seconds and maxes out at 200 mph (322 kph).

The V8 model will obviously come at a lower price compared to its V12 sibling that can be had from $211,995 in U.S., €204,900 in Germany, and £154,900 in U.K. It remains to be seen whether the V8 version will have a modified design to set it apart from the beefier model. For what it’s worth, the prototype spotted at the Nürburgring had the same design as the V12 model, although some things could change before the V8 version’s debut in production guise.

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