Original estimates were that the Audi A3 Sportback e-Tron would achieve 20 miles of all electric driving, but recent documents filed with the EPA show the e-Tron plug-in hybrid can drive up to 17 miles on its battery power.

The standard Audi A3 e-Tron model is only rated at 16 miles electric range, but with the Ultra package (which includes a downgrade from 17 inch to 16 inch wheels as well as ultra-low rolling resistance 16inch tires) you can achieve 17 miles. The efficiency rating also goes up slightly from 83 MPGe to 86 MPGe with the Ultra package.

Currently, the A3 e-Tron is available in the USA in limited numbers and will soon be available nationwide.