My 2017 E-tron has about 31,000 miles (50,000 km) on it and I've owned it for the past 7 months. During that time I have driven it only about 5,000 miles (8,050 km) and I try to drive as economically as possible (why else own an E-tron?). Currently, after charging the batteries overnight, my car only gets 13 miles (21 km) in EV mode. Is that reasonable or does it suggest that there is something wrong?