So what models are we talking here JasonM?
Our new ones are the 530D Twin turbo saloons, just reading some of the Beemer posts and in the US there's loads of the same kind of fault. They've cost ££££ and quite a few have returned them to the dealer.
Ours aren't chipped as they are quick enough (when they work) they come straight out of the box from BMW & they won't let our mechanics touch em other than routine servicing. The only thing they allow is removing the limiter & they do that.
So the diesels have a limiter fitted,155mph as per normal I suspect,who said diesels are smelly and slow
Yep, limited to 155mph.
I've had both petrol and diesel in the E92 coupes and
mid-range the diesel is quicker. In fact,
mid-range it will hang on to an E92 'M' up to legal motorway speeds.
Even their own figures don't dispute that.
E92 Straight six diesel 0-60mph is a tad over 5 seconds and limited to 155mph, but mid-range is almost 2 seconds quicker than an M.
Having had experience of most of them, I now choose the diesel.