Audi A3 e-tron Concept at Shanghai 2011 Motor Show

Audi rolled out yet another e-tron concept alongside the new Q3 in Shanghai, and what it lacks in power, it makes up for with efficiency, fuel economy... and weight.

The original A3 sedan concept that bowed in Geneva came packing a modified version of the TT RS' turbocharged five-cylinder, outputting over 400 horsepower and 368 pound-feet of torque. This etron variant – based on the RS3 hatch – ditches the five-pot in favor of a turbo'd and direct-injected 1.4-liter four-cylinder that brings 211 horsepower to the party, and combined with another 27 ponies pulled from the 20kW electric motor, can propel the A3 e-tron to 60 mph in 6.8 seconds before topping out at 143 mph.

A seven-speed dual-clutch S-tronic transmission is the only drivetrain component carried over from the concept's RS3 roots, but combined with lithium-ion battery pack stored in the trunk, Audi claims the e-tron can putt along for up to 34 miles on electric power alone thanks to the plug-in hybrid drivetrain. Source: Autoblog Green