Yes, the hub is identical
Same 5x100 PCD and same 57.1 mm centre bore: wheels from Pontiac Sunfire bolt on and centre on Seat Ibiza V without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from Pontiac Sunfire is compared with the one from Seat Ibiza V of the same diameter: how much closer the wheel gets to the shock absorber or how far it sticks out of the wheel arch, and whether the tyre keeps the same overall diameter.
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≈6Jx14 ET42 · 195/70R14 — Check on the car
Compared with the original 5Jx14 ET38 on Seat Ibiza V: shock absorber side +16.7 mm, wheel arch side +8.7 mm, tyre diameter +2.3 % : fit it with the original tyre size of Seat Ibiza V (185/70R14), not that of Pontiac Sunfire.
Comparison for guidance only (estimated width). Check in detail
Before fitting the wheels
An identical hub is not enough: offset, width and diameter change the position of the wheel, and larger calipers can touch a smaller wheel. Original wheels often use bolts or nuts with a specific seat: keep the fixings intended for the wheel, with the thread of Seat Ibiza V (M14x1.5), tightened to the torque shown on its vehicle page. Finally, check that the size is among the approved fitments for your vehicle. This comparison is for guidance only: have the fitting approved by a professional.
And the other way round: wheels from Seat Ibiza V on Pontiac Sunfire?