Hi all what is my 2005 55 reg Bmw 535d M Sport worth with 78000 miles along with full service history it has Pro Sat nav, electric comfort seats and steering wheel. Im located in Birmingham

 

You really can't get a worthwhile answer with just that amount of detail (e.g. "loads of extras"). The condition is important, your location (e.g. Chelsea vs Some village in the middle of nowhere), the real accurate list of extras. Plus it's all down to how much you can get someone to pay for it. A dealer will give you the lowest offer unless you're trading it in to buy a new M6 (for example).

 

Glass's list as follows:

Part-exchange Price:
Excellent condition:
?13000
Average condition:
?11700
Below average condition:
?10400

The options won't add a huge amount but make it far easier to sell.