Braman Audi currently offers up the fuel efficient gas powered variant of these models, and is expected to be one of the first to get fully electric / rechargeable vehicles once the Germany company releases them to the public.
CEO Rupert Stadler spoke of this tech at a recent Audi Annual Press Conference. He said the auto maker is planning to offer the A3 e-tron plug-in hybrid by 2014:
"While we are planning small-scale series production for this car, which is a vital element in our innovation and technology plans, the electric driving experience will become a reality for a growing clientele with our plug-in hybrids," Stadler said.1
Stay tuned for more news, and we'll know more about power specifications and pricing as Audi releases additional news.
Source: 1http://www.egmcartech.com/2012/03/05/audi-e-tron-plug-in-hybrid-coming-to-a3-a4-and-q7-technology-coming-to-all-models-by-2020/