Yes. The Soviets largely manufactured (and designed) their own combat vehicles, but everything from trucks on down came in vast quantities from the US. Meanwhile the mighty Wehrmacht was still mostly horse-drawn.
That was probably also because they did not really have a reliable source of fuel once the US gave up neutrality, beyond a synthetic one via coal, in fact I believe both the failure to capture the oil fields in Africa and beyond Stalingrad led to a faster defeat.
