When is the best time to buy a new car - March or September?

Will we get a good deal on a used car if we purchase in March or September, when registration numbers change?

Asked on 29 November 2016 by Audrey Kirkland

Answered by Honest John
In theory the supply of used cars should be greater from part-exchanges and re-fleetings in those months, but in fact they take 2 - 4 weeks to feed through, moving the March p/xs to April/May, which are months when the market is strongest and prices are highest. Not so 2 - 4 weeks after September p/xs are taken in because the market tends to bottom out in late October/early November when prices are relatively at their lowest.
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