Engine Porsche M48.51

The German concern produced the 4.8-liter turbo engine Porsche M48.51 from 2007 to 2010 and installed it on a restyled version of the first generation Cayenne crossover in the back of 957. The unit has two levels of boost: for the Turbo modification at 500 hp and for the Turbo S at 550 hp.

Engines of M48-line: M48.00, M48.50, M48.01, M48.51, M48.70.


Production years 2007-2010
Displacement, cc 4806
Fuel system direct injection
Power output, hp 500 – 550
Torque output, Nm 700 – 750
Cylinder block aluminum V8
Block head aluminum 32v
Cylinder bore, mm 96
Piston stroke, mm 83
Compression ratio 10.5
Features no
Hydraulic lifters yes
Timing drive chain
Phase regulator on the intake shafts
Turbocharging MHI TD04HL
Recommended engine oil 5W-40
Engine oil capacity, liter 8.5
Fuel type petrol
Euro standards EURO 4
Fuel consumption, L/100 km (for Porsche Cayenne Turbo S 2009)
— city
— highway
— combined
Engine lifespan, km ~200 000
Weight, kg 236

The engine was installed on:

  • Porsche Cayenne 1 (9PA) in 2007 – 2010.

Disadvantages of the Porsche M48.51 engine

  • There are problems with bullying here, but they are less common than their predecessor;
  • The culprit is overheating, driving on a cold engine, bad gasoline or oil;
  • The expansion tank and coolant pipes often burst and leak;
  • A lot of trouble delivers injection pump direct injection systems and fuel pumps in the tank;
  • The hot part of the turbines often cracks, the ignition coils and the pump fail.

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