Or one of those hybrid / Plug-In (Golf GTE, Hyundai Ioniq) type things, where you can pottle around traffic with battery only (up to about 25 miles), and use engine on clearer roads. My 1.0TSI was more efficient than the 2.0TDI in the city (by about 3mpg), like for like, despite both having identical 'on paper' mpg of 64 (I did get this figure few times late at night). On the highwway the 2.0TDI did better. Incidently by about 3mpg too!).