Yes, the hub is identical
Same 5x98 PCD and same 58.1 mm centre bore: wheels from RAM Promaster City bolt on and centre on Fiat e-Doblo 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 RAM Promaster City is compared with the one from Fiat e-Doblo 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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≈7Jx16 ET52 · 215/55R16 — Check on the car
Compared with the original ≈7Jx16 ET36 on Fiat e-Doblo: shock absorber side +16 mm, wheel arch side −16 mm, tyre diameter −6.3 % : fit it with the original tyre size of Fiat e-Doblo (215/65R16), not that of RAM Promaster City.
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 Fiat e-Doblo (M12x1.25), 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 Fiat e-Doblo on RAM Promaster City?