The 4.0-liter twin-turbo V8 diesel Porsche MDB.UC was installed from 2016 to 2017 on the rare Panamera 4S Diesel of the second generation. It belongs to the EA898 family, produces 422 hp and 850 Nm and is practically identical to the Audi CZAA from the SQ7.
Porsche diesel family: M05.9E, MCT.BA, MCR.CC, MCU.DB, M05.9D, MCD.UD, MCR.CA, MCT.BB, MCT.BC, MCV.VA, MCW.JA, MDB.UC, MCU.DC.
Specifications
| Production years | 2016-2017 |
| Displacement, cc | 3956 |
| Fuel system | Common Rail |
| Power output, hp | 422 |
| Torque output, Nm | 850 |
| Cylinder block | cast iron V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 83.0 |
| Piston stroke, mm | 91.4 |
| Compression ratio | 16.0 |
| Features | AVS |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | Bi-Turbo |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 9.0 |
| Fuel type | diesel |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Porsche Panamera 4S Diesel 2017) — city — highway — combined |
7.9 5.9 6.8 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 280 |
The engine was installed on:
- Porsche Panamera 2 (971) in 2016 – 2017.
Disadvantages of the Porsche MDB.UC engine
- A rare engine even in Europe, so finding parts and specialists can be difficult;
- Its main problem is fast coking, which leads to rough running; if the loss of power is ignored, the turbochargers soon fail;
- Clogged crankcase ventilation hoses cause oil leaks from many joints;
- The complex exhaust after-treatment system often throws errors.
Frequently asked questions about the Porsche MDB.UC
How much power does the Porsche MDB.UC make?
The Porsche MDB.UC develops 422 hp and 850 Nm of torque.
How much oil does the Porsche MDB.UC take and which one?
Engine oil capacity: 9.0 liters. Recommended oil: 5W-30.
Does the Porsche MDB.UC have a timing belt or chain?
The Porsche MDB.UC uses a timing chain.
Is the Porsche MDB.UC turbocharged?
Yes, the Porsche MDB.UC is turbocharged (Bi-Turbo).
Does the Porsche MDB.UC need valve clearance adjustment?
No, the Porsche MDB.UC has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Porsche MDB.UC last?
The typical lifespan of the Porsche MDB.UC is ~300 000 km with proper maintenance.
What is the fuel consumption of the Porsche MDB.UC?
Porsche Panamera 4S Diesel 2017: city 7.9, highway 5.9, combined 6.8 L/100 km.
What cars was the Porsche MDB.UC installed on?
Porsche Panamera 2 (971) in 2016 - 2017.
What are the common problems of the Porsche MDB.UC?
A rare engine even in Europe, so finding parts and specialists can be difficult. Its main problem is fast coking, which leads to rough running; if the loss of power is ignored, the turbochargers soon fail. All known problems.
