The total cost of your optional equipment is £3,790, which exactly matches the total listed in your breakdown. Here is the breakdown of how your options add up to the final total:1. Identify Paid Options. Identify the optional equipment items that carry an extra charge: COMAND Online system: £ 1,870, Panoramic glass sunroof: £ 960, Metallic paint: £ 660, Reversing camera: £3002. Identify No-Cost Options. Identify the standard or no-cost choices included in the specification: Black Artico/Dinamica upholstery: £ 0, Light Aluminium trim: £ 0, Polar Silver metallic paint: £0 (Note: The specific colour choice is £0 because the cost is covered under the general "Metallic paint" charge above).