The price a dealer will accept for a given vehicle moves through the year in a pattern that has little to do with the vehicle. It follows the structure of manufacturer incentives.
Dealer profit does not come mainly from the vehicle
Margin on a new vehicle is thin. A substantial part of a franchised dealer's new vehicle income arrives as bonuses from the manufacturer for hitting registration targets.
Those bonuses are typically stepped, so reaching a threshold pays out across every unit already sold in the period rather than only the final one.
A dealer close to a threshold therefore has a strong reason to sell one more unit even at no margin, because the bonus on the whole period depends on it.
Targets create a predictable calendar
Manufacturers measure registrations by month, quarter and year, so the pressure builds towards the end of each period and resets immediately afterwards.
Quarter ends carry more weight than ordinary month ends, and year end more still, because the largest bonus steps are usually attached to the longest periods.
The effect is that identical vehicles negotiate differently in the first week of a period than in the last, and the difference reflects the dealer's position rather than the vehicle's value.
Registration rules amplify the pattern in some markets
Where number plate identifiers change on fixed dates, buyer demand concentrates around those changeovers and dealers plan stock and staffing around them.
Immediately after a changeover, demand falls away while stock remains, which produces a quieter period where a dealer is more willing to discuss terms.
These cycles are well known within the trade, and they are one reason the same model carries different effective prices across a few weeks.
Finance and add-ons change what is negotiable
Where a dealer earns commission on arranging finance, they may hold firmer on the vehicle price while being flexible elsewhere in the transaction.
This is why the negotiation that matters is often about the total cost rather than the headline figure, since movement can appear in the trade-in, the deposit contribution or the accessories.
A dealer under registration pressure and a dealer under finance-penetration pressure will behave differently, and neither pressure is visible from the showroom floor.
Stock age drives the strongest discounts
Vehicles held in stock are usually financed by the dealer, so an unsold unit accrues cost every month it sits.
Once a vehicle has been in stock a long time, the cost of holding it begins to exceed the margin available, and the dealer's incentive shifts decisively towards moving it.
Unpopular colours and specifications sit longest and therefore discount hardest, which is why flexibility on specification tends to be worth more than timing alone.