A vehicular camera is configured to be disposed at a vehicle so as to have a field of view exterior of the vehicle. The camera includes a lens holder having a lens barrel accommodating a lens, a circuit board, and an imager disposed at a first side of a circuit board substrate. The circuit board substrate has a CTE that is different from the CTE of the lens holder. The circuit board substrate is attached at support posts extending from the support structure, with the support posts configured to flex in a radial direction toward or away from the longitudinal axis of the lens barrel. With the vehicular camera disposed at the vehicle, radial flexing of the support posts accommodates temperature-driven expansion or contraction of the lens holder relative to the circuit board substrate without flexing the circuit board substrate