Hybrid-powered A8 comes with a four-cylinder, 2.0 liter TFSI unit coupled to a 40 kW electric motor for a total output of 180 kW (245 PS / 241 bhp) and 480 Nm (345.03 lb-ft) of torque.

A 2.0 liter, four-cylinder-powered flagship sedan for Audi?

Well, it's here and it's called the Audi A8 Hybrid.

First revealed as a technology study in Geneva last year, Audi has now released final specs for the production version which differ only slightly from the concept.

Audi has coupled a 2.0 TFSI unit producing 155 kW (211 PS / 207 bhp) and 350 Nm (258.15 lb-ft) of torque with a disc-shaped electric motor capable of 40 kW (54 hp) and 210 Nm (154 lb-ft).

Total output on the hybrid A8 is configured to come in at 180 kW (245 PS / 241 bhp) and 480 Nm (345 lb-ft) of torque which is delivered to the front wheels through a fast-shifting hybrid transmission.

The A8 Hybrid can move at speeds up to 100 km/h (62 mph) on electric power alone but has a range of just three kilometers (1.86 miles) at a constant speed of 60 km/h (37.28 mph) working solely off the juice from the lithium-ion battery pack.

Average fuel-economy is rated at 6.4 liters/100 km (or 36.75 mpg US) and that's impressive for a flagship sedan like the A8.

The A8 Hybrid comes with 3 drive modes: EV gives priority to electric power and economical driving. D-mode is a straight-up combination of electric and gasoline-powered driving while, of course, S stands for sport and provides for a livelier drive.

See the press release below for full details.

Gallery: 2012 Audi A8 Hybrid production version revealed