I will happily be wrong about this, but isn't a lead time of a year for a "mass market" vehicle a bit of an ask. Last time I bought a car the "lead time" was a week.
But if you order a car with a custom configuration 2-4 months are quite usual, and even the big car manufacturers sometimes cannot match demand. The Golf 5 Variant had 11 months of delivery times for a while (VW had not made a Golf Variant for some years at that point of time).
Any time I've bought a new car I've had some optional extras and that has meant a delivery time of at least two months (VW or Skoda), through to three months for an Audi or four months for a BMW.