Can the 2020 Ford Fusion Energi make a U-turn?

Yes. Fits a 40 ft street.

37.6ft curb to curb

Street width, feet

Street 40 feet curb to curb.

2020 Ford Fusion Energi Special Service FWD. Top view, to scale.

2020 Ford Fusion Energi: turning circle by trim, 40 ft street
Trim	Circle, ft	Margin	One move
Special Service FWD	37.6	+2.4 ft	Yes
Titanium FWD	37.6	+2.4 ft	Yes
Fusion S FWD	37.6	+2.4 ft	Yes
Fusion SE FWD	37.6	+2.4 ft	Yes
Fusion SE Hybrid FWD	37.6	+2.4 ft	Yes
Fusion SEL FWD	37.6	+2.4 ft	Yes
Fusion SEL Hybrid FWD	37.6	+2.4 ft	Yes
Fusion Titanium FWD	37.6	+2.4 ft	Yes
Fusion Titanium Hybrid FWD	37.6	+2.4 ft	Yes
Plug-In Hybrid Titanium FWD	37.6	+2.4 ft	Yes

What this cannot tell you

Curb-to-curb turning circle as listed.

Mirrors and overhang need more room.