[QUOTE 2876626, member: 9609"]I took the DPF off my van and improved the mpg from 44 to 50. They are just a complete nightmare if you drive with economy in mind, in fact try to avoid the
modern diesel engines altogether, they are being destroyed with anti-pollution crap. And are going to become incredibly expensive maintenance wise.
15 years ago a good driver in an artic was getting just over 8 to the gallon, very few are now achieving more the 7.5 They are now using more diesel to produce less emissions, it's completely mad. The latest Scania Euro 6 engine is a ¼ tonne heavy than the engine it is replacing, it is amazing how much crap they are sticking on engines now.[/quote]
I think that they are now going to inspect the DPF on MOT now and fail a vehicle that has had one removed.
I had a Mondeo in which I did around 15k a year almost exclusively on motorways and the DPF failed on that. I have had an insignia for 6 months and the "swirl flaps" in the manifold failed which is such a common problem on diesels that I see garages offering services to remove them. In BMW I believe they have a habit of coming off, making a jaunt around the engine and comprehensively blowing up everything. I was very glad my car was under warranty as the bill was in the thousands to strip down the engine, replace the turbo and manifold and rebuild.
For a small car around town I would avoid diesels like the plague.