We're at 7 and a half years with our E91 330i series estate.
Every so often, we'll go have a look at something that might be interesting, and simply never come away that impressed.
Sure, the fuel consumption of our car is pretty abysmal (though still massively better than say an E63), and the ICE is pretty ancient. For all that, the sports seats are still more comfortable than most (only car that I thought was noticeably better was a new 5 series). A number of cars have more "bling", yet don't really make me think they're a real improvement.
As we've avoided a diesel and/or a turbo, it's a relatively simple, unstressed, lovely smooth 6. If wafts well and makes a lovely sound with it.
Lastly, it's probably only depreciated £5k since we bought it, so total cost of ownership has been fairly low.
Do we win?