M139 - RS 525

By launching the A 45 and A 45 S - AMG siblings in the A-Class generation (W177) - Mercedes-Benz put two red-hot irons in the compact-class fire. The ex-works models boast 387 hp (A 45) and 421 hp (A 45 S) 2.0l engines with twin-scroll turbochargers, AMG SPEEDSHIFT DCT 8-speed dual-clutch transmission, plus 4MATIC+ all-wheel drive, turning these "little" AMGs into high-speed missiles. All the same, we at POSAIDON saw the need to boost the A 45s performance even further. In keeping with standard POSAIDON nomenclature, our most powerful interpretation of the A 45s (to date) will go by the name A 45 RS 525. The name details the performance boost achieved by POSAIDON: By installing a more efficient, upgraded turbocharger, airfilter and by optimizing the engine map, our engineers have unlocked a hefty 525 hp in the M139 engine along with maximum torque of 600 Nm. Thanks to further optimizations to the control units for the AMG SPEEDSHIFT transmission and the drive chain (CPC), the A 45 converts this added power into a catapult launch, going from 0-100 km/h in just 3.4 seconds and topping out at 324 km/h.

Power	Torque	Top speed	0-100 km/h
386 kW = 525 HP	600 Nm**	325 km/h *	3,4s *

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