Can the 2027 Cadillac LYRIQ V make a U-turn?

Yes. Fits a 40 ft street.

39.6 ft turning circle

Turning circle of the 4dr Luxury.

Street width, feet

Street 40 feet curb to curb.

2027 Cadillac LYRIQ V 4dr Luxury. Top view, to scale.

Source marks: one sourcemodel-level or estimate

2027 Cadillac LYRIQ V: turning circle by trim, 40 ft street
Trim	Circle, ft	Margin	U-turn without reversing
4dr Luxury	39.6	+0.4 ft	Yes
4dr Sport	39.6	+0.4 ft	Yes
4dr Premium Luxury	39.6	+0.4 ft	Yes
4dr Premium Sport	39.6	+0.4 ft	Yes
4dr Signature Luxury	39.6	+0.4 ft	Yes
4dr Signature Sport	39.6	+0.4 ft	Yes
LYRIQ-V AWD	39.6	+0.4 ft	Yes
Premium AWD	39.6	+0.4 ft	Yes
LYRIQ Luxury AWD	39.6	+0.4 ft	Yes
LYRIQ Premium Luxury AWD	39.6	+0.4 ft	Yes
LYRIQ Premium Sport AWD	39.6	+0.4 ft	Yes
LYRIQ Signature Luxury AWD	39.6	+0.4 ft	Yes
LYRIQ Signature Sport AWD	39.6	+0.4 ft	Yes
LYRIQ Sport AWD	39.6	+0.4 ft	Yes

What this cannot tell you

Curb-to-curb turning circle as listed.

Mirrors and overhang need more room.