The M152 is a V8 engine produced by Mercedes-Benz from 2012 to 2015.
The M152 is essentially a naturally aspirated variant of the M157 engine but has been revised by AMG.
[1] It has the same bore and a stroke of 98 mm × 90.5 mm (3.86 in × 3.56 in) as the M157 but with a higher 12.6:1 compression ratio.
[2] Compared to its predecessor, the M152 features new cylinder heads, intake manifold, and lubrication system.
It also now has direct injection, and Cylinder deactivation.