There is virtually no inflation at the moment and two price rises in a little over 3 months , totalling a bit over 8% is a lot .
Unless they are facing cost increases which are running at a similar level to the 8& price increase, one can only imagine they are trying to manage demand down?
If it's cost increases that are the issue, it would be interesting to see a breakdown of where they are coming from.
Conjecturing an average customer spend of 50k over 700 cars, an 8% rise gives a gross revenue increase of £2.8m - quite a chunk of money.