B58 lump as fitted to M240i/M340i is probably one of the best engines made.
3 litre straight 6 with loads of top end power and 'stump pulling' torque at the bottom end.
My actual car made 445 bhp and 475 lb ft of twist when strapped to the dyno at Viezu. BMW quote a very conservative 369BHP and 369 lb ft of torque.
Yes, I reckon this engine in the 5 series estate, wither this one or the last one, probably makes for one of the best all round family cars money could but. I loved my m140i hugely - when it was working, and the 335d was no slouch either
To be fair my car is not quite stock.
A used £20 JB+ from Ebay gives something like an extra 4PSI of boost.....and she has always been run on 99 octane petrol.
I never made any attempt to 'run the car in' like days of old.....full boot from day one.
I've been told that cars treated like this tend to produce more power. Perhaps it's true. 
