Furthermore, the Ingolstadt automaker modified the standard 2.0-liter turbo diesel engine's ECU and added a regenerative braking system that converts surplus kinetic energy to electrical energy during a vehicle's braking phases and then temporarily stores it in the electrical system's battery.
Audi claims that the 136HP A4 2.0 TDI 'e' sprints from standstill to 100 km/h (62mph) in 9.5 seconds while topping out at 215 km/h or 134mph. Prices for the sedan version have been set €30,800 while the Avant version that has a slightly higher average consumption of 4.9 lt/100 km (48mpg U.S.) costs €32,800.