Only 7-Series sedans, including the extended version of the E66, had the 6.0-liter 12-cylinder BMW N73B60 engine installed in the rear of the E65. The engine was assembled between 2002 and 2008. The first direct injection gasoline engine in BMW history was the N73B60.
Other modifications of N73: N73B68.
The engine was installed on:
- BMW 7-Series E65 in 2002 – 2008.
Specifications
| Production years | 2002-2008 |
| Displacement, cc | 5972 |
| Fuel system | direct injection |
| Power output, hp | 445 |
| Torque output, Nm | 600 |
| Cylinder block | aluminum V12 |
| Block head | aluminum 48v |
| Cylinder bore, mm | 89 |
| Piston stroke, mm | 80 |
| Compression ratio | 11.3 |
| Features | Valvetronic |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | double VANOS |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 8.5 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for BMW 760Li 2004) — city — highway — combined |
20.2 9.5 13.4 |
| Engine lifespan, km | ~320 000 |
Disadvantages of the N73B60 engine
The direct injection system’s rapid coking is the primary cause of the issues.
Here, the Double VANOS system is a limited resource, occasionally covering less than 150,000 kilometers;
Even now, vibrations at low speeds are frequently caused by a Valvetronic malfunction; after 150,000 kilometers of running, they frequently stretch here and need to have the timing chain replaced;
Oil consumption and a propensity for leaks are additional flaws in this motor.