From 2007 to 2010, the German company manufactured the Porsche M48.51, a 4.8-liter turbocharged engine that was mounted in the rear of the 957 on a redesigned version of the original Cayenne crossover. The unit has two boost levels: 500 horsepower for the Turbo modification and 550 horsepower for the Turbo S.
M48-line engines: M48.00, M48.50, M48.01, M48.51, and 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
Bullying issues do exist here, but they are not as prevalent as they once were;
Overheating, operating a cold engine, or using faulty oil or gasoline are the culprits.
Coolant pipes and the expansion tank frequently burst and leak;
Fuel pumps in the tank and injection pump delivery systems are very problematic;
The pump, ignition coils, and hot section of the turbines frequently break.