Nissan's new hybrid system will be better than Toyotas. That's a big deal, since Toyota has the most efficient hybrid motor on the road today.
Powered by a lithium-ion battery pack, the newly developed hybrid motor may be the "most efficient 1-motor, 2-clutch parallel full hybrid system." It's important to keep in mind when comparing to the Toyota hybrid engine is a good part of what makes it the most efficient is its use of lithium-ion battery pack.
In other words, if Toyota makes the switch to lithium-ion, it's unclear who's engine would be the more efficient one.
According to Nissan:
The Nissan Hybrid System
|Nissan Hybrid Engine|
The motor is powered by a laminated lithium-ion battery featuring the same structure as the one used on LEAF, Nissan's electric vehicle. The powerful lithium-ion batteries are used to deliver high-response linear acceleration and fuel consumption equivalent to that of compact cars. The batteries are supplied by Automotive Energy Supply Corporation (AESC), a subsidiary jointly established by Nissan and NEC Corp. of Japan.
The hybrid system is scheduled to be available on the Infiniti M in late 2010.