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.
M48 family: M48.00, M48.01, M48.50, M48.51, M48.70.
Specifications
| 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 |
22.5 10.5 14.9 |
| 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.
Frequently asked questions about the Porsche M48.51
How much power does the Porsche M48.51 make?
The Porsche M48.51 develops 500 - 550 hp and 700 - 750 Nm of torque.
How much oil does the Porsche M48.51 take and which one?
Engine oil capacity: 8.5 liters. Recommended oil: 5W-40.
Does the Porsche M48.51 have a timing belt or chain?
The Porsche M48.51 uses a timing chain.
Is the Porsche M48.51 turbocharged?
Yes, the Porsche M48.51 is turbocharged (MHI TD04HL).
Does the Porsche M48.51 need valve clearance adjustment?
No, the Porsche M48.51 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Porsche M48.51 last?
The typical lifespan of the Porsche M48.51 is ~200 000 km with proper maintenance.
What is the fuel consumption of the Porsche M48.51?
Porsche Cayenne Turbo S 2009: city 22.5, highway 10.5, combined 14.9 L/100 km.
What cars was the Porsche M48.51 installed on?
Porsche Cayenne 1 (9PA) in 2007 - 2010.
What are the common problems of the Porsche M48.51?
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. All known problems.
