[mjh93sa]

It depends on what you want and what you would do with each long term.

Given the mileage and age of the 330Ci it's time to think about getting rid before it's value and desirability start to nose dive with increasing age and mileage, or to keep it for a good number of years.

The Mini on the other hand has desirability is spades and should be the easier sell. Equally it's going to retain value better over the next couple of years than the 330Ci will.

Have a look at the costs of similar cars online... and look at those a couple of years older.

The Mini should sell quick, but will retain more value for the next few years.

But don't forget to enjoy the new car!