BMW Financial Services - am I being ripped off?

[matt21]

Bought an approved used BMW with finance incentive 21 days ago. Based on the interest, with zero payments, I should owe them £196 to settle (based on APR on a daily basis - GFV = borrowed amount so just interest to be paid due to large deposit)

Rang up for a settlement figure today, quoted £690. Couldn’t explain why, stating it would take 2 working days to send the breakdown over. Said settlement quote is valid to 8 Feb, but even so this should only be about £450.

Any ideas why I’m paying so much more???