To get there, Audi’s leaned on slick aerodynamics, an upgraded powertrain, and a lithium iron phosphate (LFP) battery. The numbers tell the story: on the WLTP cycle, the A2 e-tron sips just 12.8 kWh per 100 km. The A2 e-tron delivers on this without cutting away at daily usability or practicality. The 61 kWh LFP battery stands out, too. Audi plans to pull the wraps off the A2 e-tron worldwide later this year.