Do BMW still help look after these now or is it very much a, your're on your own type thing due to its bespoke nature?
In my experience BMW treat it as a 320i that they can't find parts for on their system.
The main problem is the cylinder bore linings fail, many of these failures occurred during the warranty period and whilst fixed, the problem was not solved. The best solution is to get them re-linered with steel liners, if you buy one with it's original liners, it's a timebomb, and once the block's gone, you're left trying to find one from a small pool of scrapped cars that were likely scrapped because of the same problem - because the F1 foundry at Landshut sure as F isn't making them for you. In short, unless you're buying one that's been re-linered already, you have to get it done pre-emptively - I've got the bill for that in the service history of my car and it was several thousand pounds.
This is what the supply of used parts looks like in the UK ... I'd bet they're not getting taken off the road for anything other than catastrophic, or simply undiagnoseble engine problems...
Frustratingly, my car is exhibiting problems that end up as terminal despite having these major fixes done already, and
so far BMW diagnostics can't find a fault. At the current rate, my car will be one of the SORN'd numbers in January (MOT). To protect the engine I'm now not using it until I can get it pulled apart, I'm hoping I've just popped a head gasket... I'm fearing the work done on the car prior to me buying it is not legit.
BMW released this as a
true homologation special... i.e. a car that's not fit for road use, but
had to be done for the touring car, and once it's out of warranty... **** that.
The wheels (might seem trivial, but it's a big deal), are weak. It's virtually impossible to find a second hand one that's not full of welds, and you can't buy them new.
How weak? you may ask, this was my back left...
... and the ones that have been fixed and refurbed don't have the BMW Motorsport logo etched under the clearcoat, so any that are claiming to be good, but don't have the logo, are being sold by scammers.
...
It's a relatively lightweight, high-revving, naturally aspirated, 6MT, saloon. On the right road, it's massive fun, and possibly the epitome of "slow-car-fast" driving when it comes to post 2000 BMW's. I don't think there's an experience from Munich like it since the M3 went 6-pot.